CN114747201A

CN114747201A - Camera actuator and camera module comprising same

Info

Publication number: CN114747201A
Application number: CN202080083463.2A
Authority: CN
Inventors: 李成国
Original assignee: LG Innotek Co Ltd
Current assignee: LG Innotek Co Ltd
Priority date: 2019-11-29
Filing date: 2020-11-23
Publication date: 2022-07-12
Anticipated expiration: 2040-11-23
Also published as: KR102560396B1; WO2021107524A1; KR20230117065A; CN117354611A; JP2023503595A; CN117354613A; TW202139683A; CN117354612A; KR20210067420A; EP4068751A1; CN114747201B; EP4068751A4; US20220404683A1

Abstract

An embodiment of the present invention discloses a camera actuator, including: a housing; a mover disposed in the case; an inclined guide part disposed between the case and the mover; a driving part provided in the case to drive the mover; a first magnet disposed in the mover; and a second magnet disposed to face the first magnet, wherein the inclined guide part is pressed by the mover due to a repulsive force between the first magnet and the second magnet.

Description

Camera actuator and camera module comprising same

Technical Field

The invention relates to a camera actuator and a camera module comprising the same.

Background

A camera is a device that takes a picture or video of a subject, and is mounted on a portable device, a drone, a vehicle, or the like. The camera module may have: an Image Stabilization (IS) function that corrects or prevents image blur due to user movement to improve image quality; an Auto Focus (AF) function that automatically adjusts a spacing between the image sensor and the lens to align a focal distance of the lens; and a zoom function of increasing or decreasing a magnification of a distant object through a zoom lens to photograph the object.

Meanwhile, the greater the number of pixels in the image sensor, the higher the resolution and the smaller the size of each pixel, but the smaller the pixels, the less the amount of light received in the same period of time. Therefore, the greater the number of camera pixels, the greater the possibility that a blurred image phenomenon due to hand shake will occur seriously when the shutter speed is reduced in a dark environment. An Optical Image Stabilizer (OIS) technique IS a technique of changing an optical path to correct a blur due to movement, and IS a typical IS technique.

According to the conventional OIS technology, the movement of the camera is detected by a gyroscope or the like, and based on the detected movement, the lens may be tilted or moved, or a camera module including the lens and the image sensor may be tilted or moved. When tilting or moving a lens or a camera module including the lens and an image sensor for OIS, it is necessary to additionally secure a space for the tilting or moving around the lens or the camera module.

Meanwhile, the OIS actuator may be disposed around the lens. Here, the OIS actuator may include an actuator responsible for tilting about two axes perpendicular to the optical axis Z, i.e., an actuator responsible for X-axis tilting and an actuator responsible for Y-axis tilting.

However, due to the demand for ultra-thin and ultra-small camera modules, a space for arranging the OIS actuator has a large limitation, and it may be difficult to secure a sufficient space for tilting or moving a lens or a camera module including the lens and an image sensor for OIS. In addition, the larger the number of pixels in the camera, the larger the size of the lens to increase the amount of received light, but there may be a limit to increasing the size of the lens due to the space occupied by the OIS actuator.

In addition, in the case where all of the zoom function, the AF function, and the OIS function are included in the camera module, there is a problem in that the OIS magnet, the AF magnet, or the zoom magnet are disposed close to each other and cause interference of magnetic fields.

Disclosure of Invention

Technical problem

The present invention is directed to a camera actuator suitable for use in ultra-thin, ultra-small, high resolution cameras.

Further, according to the present invention, there is provided a camera actuator for performing tilting by a tilt guide pressed by magnets of different polarities.

Technical scheme

A camera actuator according to an embodiment of the present invention includes: a housing; a mover disposed in the case; a tilt guide disposed between the case and the mover; a driving part disposed within the case to drive the mover; a first magnet disposed at the mover; and a second magnet disposed to face the first magnet, wherein the inclined guide part is pressed by the mover due to a repulsive force of the first magnet and the second magnet.

The mover may include a seating groove configured to receive the tilt guide, and the camera actuator may further include first and second members configured to be received in the seating groove.

The tilt guide may be disposed between the first member and the second member, and the second member may be disposed between the tilt guide and the mover.

The seating groove may include a first groove on a bottom surface, the second member may include a second groove disposed on a surface facing the first groove, the first magnet may be disposed in the first groove, and the second magnet may be disposed in the second groove.

The tilt guide may include a base, a first protrusion protruding from a first surface of the base, and a second protrusion protruding from a second surface of the base.

The mover may be tilted about a first axis with respect to the first protrusion and may be tilted about a second axis with respect to the second protrusion.

The first member may include a first protrusion groove configured to receive the first protrusion, and the second member may include a second protrusion groove configured to receive the second protrusion.

The first member, the second member, and the tilt guide may at least partially overlap with the mover along the second axis, the tilt guide may overlap with the first member and the second member along a third axis, and the third axis may be perpendicular to the first axis and the second axis.

The seating groove may include a first region to receive the first member and a second region to receive the second member, and the first region may have a height greater than that of the second region.

The seating groove may include a third region receiving the inclined guide, and the third region may be disposed between the first region and the second region.

The height of the third region may be smaller than the height of the first region and larger than the height of the second region.

The driving part may include a driving magnet and a driving coil, the driving magnet may include a first magnet, a second magnet, and a third magnet, the driving coil includes a first coil, a second coil, and a third coil, the first magnet and the second magnet may be symmetrically disposed on the mover with respect to the first axis, the first coil and the second coil may be symmetrically disposed between the case and the mover with respect to the first axis, the third magnet may be disposed on a bottom surface of the mover, and the third coil may be disposed on a bottom surface of the case.

The slanted guide may overlap the third coil or the third magnet along a third axis.

The second member may be disposed between the inclined guide and the first member.

The camera actuator according to the embodiment includes: a housing; a mover disposed within the housing; a tilt guide disposed between the case and the mover; a driving part provided in the case to drive the mover; a first magnet disposed at the mover; and a support member provided in the case and a second magnet provided in the support member, wherein the inclined guide is provided between the mover and the support member, and surfaces of the first magnet and the second magnet facing each other have the same polarity.

Effects of the invention

According to the embodiments of the present invention, it is possible to provide a camera actuator suitable for an ultra-thin, ultra-small, and high-resolution camera. In particular, the actuator for OIS can be efficiently arranged without increasing the overall size of the camera module.

According to an embodiment of the present invention, the tilt in the X-axis direction and the tilt in the Y-axis direction do not generate magnetic field interference with each other, the tilt in the X-axis direction and the tilt in the Y-axis direction can be realized with a stable structure, and for an actuator for auto-focusing or zooming, it does not generate magnetic field interference, and thus an accurate OIS function can be realized.

According to the embodiments of the present invention, a sufficient amount of light can be ensured by eliminating the size limitation of the lens, and OIS with low power consumption can be realized.

Drawings

Fig. 1 is a perspective view of a camera module according to an embodiment;

fig. 2a is a perspective view of a state in which a shield case is removed from the camera shown in fig. 1;

FIG. 2b is a top view of the camera module shown in FIG. 2 a;

FIG. 3a is a perspective view of the first camera module shown in FIG. 2 a;

FIG. 3b is a side cross-sectional view of the first camera module shown in FIG. 3 a;

fig. 4a is an exploded perspective view of a second camera actuator according to the first embodiment;

FIG. 4b is a perspective view of the housing according to the first embodiment;

fig. 5a is a perspective view of a mover according to an embodiment;

fig. 5b is a perspective view of the mover in a different direction from fig. 5 a;

FIG. 6a is a perspective view of a prism holder according to an embodiment;

fig. 6b is a bottom view of a prism holder according to an embodiment;

FIG. 6c is a side view of a prism holder according to an embodiment;

FIG. 6d is another side view of a prism holder according to an embodiment;

fig. 7a is a perspective view of a slanted guide according to an embodiment;

FIG. 7b is a perspective view of the angled guide in a different orientation than FIG. 7 a;

FIG. 7c is a cross-sectional view of the angled guide portion taken along line AA' of FIG. 7 a;

fig. 8a is a perspective view of a second camera actuator according to an embodiment with the shield and substrate removed;

FIG. 8b is a cross-sectional view taken along line BB' in FIG. 8 a;

FIG. 8c is a cross-sectional view taken along line CC' of FIG. 8 a;

fig. 9 is a view illustrating a driving part according to an embodiment;

fig. 10a is a perspective view of a second camera actuator according to an embodiment;

FIG. 10b is a cross-sectional view taken along line DD' in FIG. 10 a;

fig. 10c is an exemplary diagram of the movement of the second camera actuator shown in fig. 10 b;

fig. 11a is a perspective view of a second camera actuator according to an embodiment;

FIG. 11b is a cross-sectional view taken along line EE' of FIG. 11 a;

fig. 11c is an exemplary diagram of the movement of the second camera actuator shown in fig. 11 b;

fig. 12a is an exploded perspective view of a second camera actuator according to a second embodiment;

fig. 12b is a perspective view of the housing according to the second embodiment.

Fig. 13a is a perspective view of a prism holder according to an embodiment.

Fig. 13b is a bottom view of a prism holder according to an embodiment;

FIG. 13c is a side view of a prism holder according to an embodiment;

fig. 14a is a perspective view of a slanted guide according to an embodiment;

FIG. 14b is a perspective view of the angled guide in a different orientation than FIG. 14 a;

FIG. 14c is a cross-sectional view of the angled guide portion taken along line FF' in FIG. 14 a;

fig. 15a is a perspective view of a second camera actuator with the shield and substrate removed according to an embodiment;

FIG. 15b is a cross-sectional view taken along line GG' in FIG. 15 a;

FIG. 15c is a cross-sectional view taken along line HH' of FIG. 15 a;

fig. 16 is a view illustrating a driving part according to an embodiment;

fig. 17a is a perspective view of a second camera actuator according to an embodiment;

FIG. 17b is a cross-sectional view taken along line MM' in FIG. 17 a;

fig. 17c is an exemplary diagram of the movement of the second camera actuator shown in fig. 17 b;

fig. 18a is a perspective view of a second camera actuator according to an embodiment;

FIG. 18b is a cross-sectional view taken along line LL' in FIG. 18 a;

fig. 18c is an exemplary diagram of the movement of the second camera actuator shown in fig. 18 b;

fig. 19a is an exploded perspective view of a second camera actuator according to a third embodiment;

FIG. 19b is a perspective view of the housing according to the third embodiment;

FIG. 20a is a perspective view of a prism holder according to an embodiment;

fig. 20b is a bottom view of a prism holder according to an embodiment;

FIG. 20c is a side view of a prism holder according to an embodiment;

fig. 21a is a perspective view of a slanted guide according to an embodiment;

FIG. 21b is a perspective view of the angled guide in a different orientation than FIG. 21 a;

FIG. 21c is a cross-sectional view of the angled guide portion taken along line FF' in FIG. 21 a;

fig. 22a is a perspective view of a second camera actuator with the shield and substrate removed according to an embodiment;

FIG. 22b is a cross-sectional view taken along line PP' in FIG. 22 a;

FIG. 22c is a cross-sectional view taken along line QQ' of FIG. 22 a;

fig. 23 is a view illustrating a driving part according to an embodiment;

fig. 24a is a perspective view of a second camera actuator according to an embodiment;

FIG. 24b is a cross-sectional view taken along line SS' in FIG. 24 a;

fig. 24c is an exemplary diagram of the movement of the second camera actuator shown in fig. 24 b;

fig. 25a is a perspective view of a second camera actuator according to an embodiment;

FIG. 25b is a cross-sectional view taken along line RR' of FIG. 25 a;

fig. 25c is an exemplary diagram of the movement of the second camera actuator shown in fig. 25 b;

FIG. 26 is a perspective view of an actuator for auto-focus (AF) or zoom according to another embodiment of the present invention;

FIG. 27 is a perspective view with some components omitted from the actuator according to the embodiment shown in FIG. 26;

FIG. 28 is an exploded perspective view with some components omitted from the actuator according to the embodiment shown in FIG. 26;

FIG. 29a is a perspective view of a first lens assembly in the actuator according to the embodiment shown in FIG. 28;

FIG. 29b is a perspective view with some components removed from the first lens assembly shown in FIG. 29 a;

FIG. 30 is a perspective view of a third lens assembly in the actuator according to the embodiment shown in FIG. 28;

fig. 31 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied;

fig. 32 is a perspective view of a vehicle to which a camera module according to the embodiment is applied.

Detailed Description

Since many modifications and embodiments of the invention are possible, specific embodiments thereof are shown in the drawings and will be described herein. However, it is not intended to limit the invention to the particular embodiments, but rather, it is to be understood that all modifications, equivalents, and alternatives falling within the spirit and scope of the invention are encompassed by the invention.

Various elements may be described using terms including ordinal numbers such as first, second, etc., but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a second element could be termed a first element, and, similarly, a first element could be termed a second element, without departing from the scope of the present invention. Terms and/or includes combinations of multiple related list items or any of multiple related list items.

When a particular element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, but it is understood that other elements may be present therebetween. On the other hand, when a specific element is described as being "directly connected" or "directly coupled" to another element, it is to be understood that no other element exists therebetween.

The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless the context clearly dictates otherwise, singular expressions include plural expressions. In this application, terms such as "including" or "having" are intended to indicate that the features, numbers, steps, operations, elements, components, or combinations thereof described in the specification are present, but do not preclude the possibility of one or more other features, numbers, steps, operations, elements, components, or combinations thereof being present or added.

Unless defined otherwise, all terms including technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings, but the same or corresponding elements are denoted by the same reference numerals throughout the drawings, and repeated descriptions thereof will be omitted.

Fig. 1 is a perspective view of a camera module according to an embodiment, fig. 2a is a perspective view of a state where a shield cover is removed from the camera module shown in fig. 1, and fig. 2b is a top view of the camera module shown in fig. 2 a.

Referring to fig. 1, the camera module 1000 may include a single camera module or a plurality of camera modules. For example, the camera module 1000 may include a first camera module 1000A and a second camera module 1000B. The first and

second camera modules

1000A and 1000B may be covered by a predetermined shield 1510.

Referring to fig. 1, 2A, and 2B, the first camera module 1000A may include a single actuator or a plurality of actuators. For example, a first camera module 1000A may include a first camera actuator 1100 and a second camera actuator 1200.

The first camera actuator 1100 may be electrically connected to the first set of circuit boards 1410 and the second camera actuator 1200 may be electrically connected to the second set of circuit boards 1420, although not shown, the second set of circuit boards 1420 may also be electrically connected to the first set of circuit boards 1410. The second camera module 1000B may be electrically connected to a third set of circuit boards 1430.

The first camera actuator 1100 may be a zoom actuator or an Auto Focus (AF) actuator. For example, the first camera actuator 1100 may support a single lens or a plurality of lenses, and may perform an AF function or a zoom function by moving the single lens or the plurality of lenses according to a control signal of a predetermined controller.

The second camera actuator 1200 may be an Optical Image Stabilizer (OIS) actuator.

The second camera module 1000B may include a fixed focal length lens provided in a predetermined barrel (not shown). The fixed focal length lens may also be referred to as a "single focal length lens" or "singlet lens".

The second camera module 1000B may include an actuator (not shown) disposed in a predetermined housing (not shown) and capable of driving the lens part. The actuator may be a voice coil motor, a micro-actuator, a silicon actuator, etc., and may be applied in various ways such as an electrostatic method, a thermal method, a bimorph method, an electrostatic force method, etc., but the present invention is not limited thereto.

Next, fig. 3a is a perspective view of the first camera module shown in fig. 2a, and fig. 3b is a side sectional view of the first camera module shown in fig. 3 a.

Referring to fig. 3a, the first camera module 1000A may include a first camera actuator 1100 and a second camera actuator 1200, the first camera actuator 1100 being configured to perform a zoom function and an AF function, the second camera actuator 1200 being disposed at one side of the first actuator 1100 and being configured to perform an OIS function.

Referring to fig. 3b, the first camera actuator 1100 may include an optical system and a lens driving part. For example, at least one or more of first lens assembly 1110, second lens assembly 1120, third lens assembly 1130, and guide pin 50 may be disposed in first camera actuator 1100.

In addition, the first camera actuator 1100 may include a driving coil 1140 and a driving magnet 1160 and perform a high-magnification zoom function.

For example, the first and

second lens assemblies

1110 and 1120 may be moving lenses that are moved by the driving coil 1140, the driving magnet 1160, and the guide pin 50, and the third lens assembly 1130 may be a fixed lens, but the present invention is not limited thereto. For example, third lens assembly 1130 may function as a condenser that focuses light to be imaged at a particular location, and first lens assembly 1110 may function as a transformer (variator) that re-images an image formed by third lens assembly 1130 at another location. Meanwhile, the first lens assembly 1110 may be in a state where the distance or image distance to the subject is considerably changed and the change in magnification is large, and the first lens assembly 1110 as a transformer plays an important role in changing the focal length or magnification of the optical system. Meanwhile, the image point formed by first lens assembly 1110 as a transformer may be slightly different depending on the position. Accordingly, second lens assembly 1120 may perform a position compensation function on the image formed by the transducer. For example, second lens assembly 1120 acts as a compensator that accurately forms the image point formed by first lens assembly 1110 as a transformer at the actual position of image sensor 1190.

For example, first lens assembly 1110 and second lens assembly 1120 may be driven by electromagnetic forces due to the interaction between drive coil 1140 and drive magnet 1160.

Further, a predetermined image sensor 1190 may be provided perpendicular to the optical axis direction of the parallel light.

Next, the second camera actuator 1200 will be described in detail below with reference to fig. 4 and subsequent drawings.

Further, the camera module according to the embodiment may implement OIS through control of the optical path by the camera actuator, and thus may minimize the occurrence of a shift or tilt phenomenon, and may obtain optimal optical characteristics.

Since fig. 1 to 3 and the description thereof are intended to explain the overall structure and the operation principle of a camera module according to an embodiment of the present invention, embodiments of the present invention are not limited to the detailed configuration shown in fig. 1 to 3.

Meanwhile, in the case where the OIS actuator and the AF actuator or the zoom actuator are provided according to the embodiment of the present invention, it is possible to prevent magnetic field interference from the AF magnet or the zoom magnet when the OIS actuator is driven. Since the driving magnet of the second camera actuator 1200 is disposed separately from the first camera actuator 1100, magnetic field interference between the first camera actuator 1100 and the second camera actuator 1200 may be prevented. In the present specification, the term "OIS" may be used interchangeably with terms such as "hand shake correction", "optical image stabilization", "optical image correction", and "shake correction".

Hereinafter, a control method and a detailed structure of the second actuator according to one embodiment of the present invention will be described in more detail.

Fig. 4a is an exploded perspective view of a second camera actuator according to the first embodiment, and fig. 4b is a perspective view of a housing according to the first embodiment.

Referring to fig. 4a and 4b, the second camera actuator 1200 according to the embodiment includes a shield cover 1210, a case 1220, a mover 1230, a rotation part 1240, a driving part 1250, a first member 1231a, and a second member 1226.

The mover 1230 may include a prism holder 1231 and a prism 1232 disposed on the prism holder 1231. In addition, the rotation part 1240 may include a tilt guide 1241 and a first magnet 1242 and a second magnet 1243 having different polarities to press the tilt guide 1241. Further, the driving part 1250 includes a driving magnet 1251, a driving coil 1252, a hall sensor part 1253, a substrate part 1254, and a yoke part 1255.

First, the shield cover 1210 may be disposed at the outermost side of the second camera actuator 1200, and disposed to surround the rotation part 1240 and the driving part 1250, which will be described later.

The shield cover 1210 may block or reduce electromagnetic waves generated from the outside. That is, shield 1210 may reduce the occurrence of a failure in rotary portion 1240 or drive portion 1250.

The housing 1220 may be disposed inside the shield case 1210. Further, the case 1220 may be provided inside a substrate portion 1254 described later. The housing 1220 may be fastened to fit to the shield 1210.

The housing 1220 can include a first housing side 1221, a second housing side 1222, a third housing side 1223, and a fourth housing side 1224.

The first case side 1221 and the second case side 1222 may be disposed to face each other. Further, the third case side 1223 and the fourth case side 1224 may be disposed to face each other.

In addition, a third case side 1223 and a fourth case side 1224 may be disposed between the first case side 1221 and the second case side 1222. The third case side 1223 may be in contact with the first case side 1221, the second case side 1222, and the fourth case side 1224. The third case side 1223 may be a bottom surface of the case 1220.

Here, the bottom surface means one side in the first direction. In addition, the first direction is an X-axis direction in the drawing, and the term "first direction" may be used interchangeably with the term "second axis direction" and the like. The second direction is a Y-axis direction in the drawing, and the term "second direction" may be used interchangeably with the term "first axis direction" and the like. The second direction is a direction perpendicular to the first direction. In addition, the third direction is a Z-axis direction in the drawing, and the term "third direction" may be used interchangeably with the term "third axis direction" and the like. The third direction is a direction perpendicular to both the first direction and the second direction. Here, the third direction (Z-axis direction) may correspond to a direction of the optical axis, and the first direction (X-axis direction) and the second direction (Y-axis direction) may be directions perpendicular to the optical axis and may be tilted by the second camera actuator. A detailed description will be provided later.

Further, the first housing side 1221 may include a first housing hole 1221 a. A first coil 1252a described later may be provided in the first housing hole 1221 a.

Further, the second housing side 1222 may include a second housing aperture 1222 a. Further, a second coil 1252b, which will be described later, may be provided in the second housing hole 1222 a.

The first and

second coils

1252a and 1252b may be coupled to a substrate portion 1254. In one embodiment, the first and

second coils

1252a and 1252b may be electrically connected to the substrate portion 1254 and current may flow therein. This current is a component of the electromagnetic force that allows the second camera actuator to tilt about the X-axis.

Also, the third housing side 1223 may include a 3-1 st housing hole 1223a and a 3-2 nd housing hole 1223 b.

A third coil 1252c described later may be provided in the 3 rd-1 case hole 1223 a. Third coil 1252c may be coupled to substrate portion 1254. Further, third coil 1252c may be electrically connected to substrate portion 1254, and current may move therein. This current is a component of the electromagnetic force that allows the second camera actuator to tilt about the Y-axis.

A first member 1231a, which will be described later, may be disposed in the 3 rd-2 th housing hole 1223 b. Accordingly, the first member 1231a may be coupled to the third housing side 1223. The first member 1231a may be disposed through the 3 rd to 2 nd housing holes 1223 b. Thus, the first member 1231a may at least partially overlap the 3 rd-2 housing hole 1223b in the third direction (Z-axis direction).

In addition, the prism holder 1231 may include a protrusion formed due to the fourth seating groove 1231S4 a. Here, the projection may extend toward the fourth case side 1224. Further, the protrusion may be provided at an upper portion, a lower portion, or a side surface of the mover 1230. In one embodiment, a protrusion may be provided at an upper portion of the mover 1230 and improve a coupling force between the mover 1230, the case 1220, and the tilt guide 1241. Also, the end of the protrusion may contact the first member 1231 a. That is, the protrusion may be coupled to the first member 1231 a. Due to this structure, as described later, the repulsive force generated by the first and second magnets can be transmitted from the prism holder 1231 to the first member 1231a, or from the first member 1231a to the prism holder 1231. The above description can be applied to this embodiment and other embodiments described later.

The fourth case side 1224 may be disposed between the first case side 1221 and the second case side 1222 and may be in contact with the first case side 1221, the second case side 1222, and the third case side 1223.

In addition, the case 1220 may include a receiving part 1225 formed by the first to fourth case sides 1221 to 1224. The second member 1226, the first member 1231a, and the mover 1230 may be provided as elements in the accommodating part 1225.

The second member 1226 may be disposed in the housing 1220. The second member 1226 may be disposed within or included in the housing. Further, the second member 1226 may be coupled to the housing 1220. In an embodiment, the second member 1226 may be disposed between the 3 rd-1 housing hole 1223a and the fourth housing side 1224. In addition, the second member 1226 may pass through a 3 rd-2 case hole 1223b formed in the third case side 1223 and be coupled to the third case side 1223. Accordingly, even during a tilting of the mover 1230 described later, the second member 1226 may be coupled to the case 1220 and may remain fixed. In addition, the second member 1226 includes a second groove gr2 on which the second magnet 1243 is seated. Accordingly, the second member 1226 can fix the position of the second magnet 1243 and can prevent a change in the supporting force due to the repulsive force. Also, the second member 1226 may be formed integrally with the case 1220 or separately from the case 1220. In the case where the second member 1226 is integrally formed with the case 1220, the coupling force between the second member 1226 and the case 1220 may be improved, and the reliability of the camera actuator may be improved. Further, in the case where the second member 1226 and the case 1220 are separated, ease of assembly and manufacture of the second member 1226 and the case 1220 may be improved. Hereinafter, description will be made based on the case where the second member 1226 is separated from the case 1220. Further, in the present specification, the second member 1226 should be understood as a support member in which the second magnet is provided in the case 1220.

The mover 1230 includes a prism holder 1231 and a prism 1232 disposed on the prism holder 1231.

First, the prism holder 1231 may be seated on the receiving part 1225 of the case 1220. The prism holder 1231 may include first to fourth prism outer side surfaces corresponding to the first to fourth case sides 1221, 1222, 1223 and 1224, respectively. In addition, the prism holder 1231 may include a first member 1231a disposed on the fourth seating groove of the fourth prism outer side surface. A detailed description thereof will be provided later. The first member 1231a may include a second protrusion groove PH2 formed in a surface of the prism holder 1231 facing the fourth seating groove. A second protrusion of the inclined guide part 1241, which will be described later, may be seated in the second protrusion groove PH 2.

The prism 1232 may be disposed on the prism holder 1231. To this end, the prism holder 1231 may have a seating surface, which may be formed of an accommodation groove. The prism 1232 may include a reflection part disposed therein. However, the present invention is not limited thereto. In addition, the prism 1232 may reflect light reflected from the outside (e.g., an object) toward the inside of the camera module. In other words, the prism 1232 may change the path of the reflected light and improve the spatial constraints of the first and second camera actuators. It should be appreciated that in this manner, the camera module may extend the optical path and provide a large magnification range while minimizing the thickness of the camera module.

In addition, the first member 1231a may be coupled to the prism holder 1231. The first member 1231a may contact a protrusion provided in a region other than the fourth seating groove in the fourth prism outer side surface of the prism holder 1231. The first member 1231a may be integrally formed with the prism holder 1231. Alternatively, the first member 1231a may be formed of a structure separate from the prism holder 1231.

The rotation part 1240 includes a tilt guide part 1241 and first and

second magnets

1242 and 1243 having different polarities to press the tilt guide part 1241.

The tilt guide 1241 may be coupled to the mover 1230 and the case 1220. Specifically, in the first embodiment, the tilt guide 1241 may be disposed between the first member 1231a and the second member 1226 and coupled to the mover 1230 and the case 1220. Therefore, in the third direction (Z-axis direction), the fourth case side 1224, the first member 1231a, the inclined guide 1241, the second member 1226, and the prism holder 1231 may be arranged in order.

Further, the inclined guide part 1241 may be disposed adjacent to the optical axis. In this way, the actuator according to the present embodiment can easily change the optical path in accordance with the inclination about the first axis and the second axis described later.

Further, the tilt guide 1241 may include a base, first protrusions spaced apart on the base in a first direction (X-axis direction), and second protrusions spaced apart on the base in a second direction (Y-axis direction). Further, the first protrusion and the second protrusion may protrude in opposite directions. It is to be understood that the tilt guide 1241 may be expressed in various terms, for example, a rotation plate, a guide, a rotation guide, a tilt portion, and a tilt plate. And a detailed description thereof will be given later.

The first magnet 1242 may be seated on the fourth seating groove 1231S4a of the prism holder 1231. Specifically, the first magnet 1242 may be seated on a first recess of the fourth seating recess.

The second magnet 1243 may be disposed in the second member 1226. In one embodiment, the second magnet 1243 may be disposed in the second groove gr2 of the second member 1226.

Also, the first and

second magnets

1242 and 1243 may have the same polarity. For example, the first magnet 1242 may be a magnet having an N-pole, and the second magnet 1243 may be a magnet having an N-pole. Or, conversely, the first magnet 1242 may be a magnet having an S-pole, and the second magnet 1243 may be a magnet having an S-pole.

In addition, the first and

second magnets

1242 and 1243 may generate a repulsive force therebetween due to having the same polarity as described above. Due to this configuration, a repulsive force may be applied to the prism holder 1231 coupled to the first magnet 1242 and the second member 1226 or the case 1220 coupled to the second magnet 1243. The repulsive force applied to the prism holder 1231 may also be transmitted to the first member 1231 a. In this way, the inclined guide part 1241 disposed between the first member 1231a and the second member 1226 may be pressed due to the repulsive force. That is, the repulsive force may maintain a force that allows the inclined guide 1241 to be disposed between the first member 1231a and the second member 1226. A detailed description thereof will be provided later.

In addition, the first and

second magnets

1242 and 1243 may be provided as a plurality of first and

second magnets

1242 and 1243. In this way, the repulsive force generated between the first and

second magnets

1242 and 1243 can be concentrated to a predetermined point to prevent divergence of the repulsive force. For example, the repulsive force can be concentrated on the center of the inclined guide portion to minimize an element that can function as the rotation resistance.

The driving part 1250 includes a driving magnet 1251, a driving coil 1252, a hall sensor part 1253, and a substrate part 1254.

The drive magnet 1251 may include a plurality of magnets. In one embodiment, the drive magnet 1251 may include a first magnet 1251a, a second magnet 1251b, and a third magnet 1251 c.

The first, second, and

third magnets

1251a, 1251b, and 1251c may be respectively disposed on the outer side surfaces of the prism holder 1231. Further, the first magnet 1251a and the second magnet 1251b may be disposed to face each other. Further, the third magnet 1251c may be disposed on a bottom surface among the outer side surfaces of the prism holder 1231. A detailed description thereof will be provided later.

The drive coil 1252 may include a plurality of coils. In one embodiment, the driving coil 1252 may include a first coil 1252a, a second coil 1252b, and a third coil 1252 c.

The first coil 1252a may be disposed to face the first magnet 1251 a. As described above, the first coil 1252a may be disposed in the first housing hole 1221a of the first housing side 1221. Further, when a current flows in the first coil 1252a, the first magnet 1251a may generate a force reflecting the magnetic field generated in the first coil 1252 a.

In addition, the second coil 1252b may be disposed opposite to the second magnet 1251 b. As described above, the second coil 1252b may be disposed in the second housing aperture 1222a of the second housing side 1222. Further, when a current flows in the second coil 1252b, the second magnet 1251b may generate a force that reflects the magnetic field generated in the second coil 1252 b.

The first coil 1252a may be disposed to face the second coil 1252 b. That is, the first coil 1252a may be disposed to be symmetrical to the second coil 1252b with respect to the first direction (X-axis direction). This may also apply to the first magnet 1251a and the second magnet 1251 b. That is, the first magnet 1251a and the second magnet 1251b may be disposed to be symmetrical with respect to the first direction (X-axis direction). Further, the first coil 1252a, the second coil 1252b, the first magnet 1251a, and the second magnet 1251b may be disposed to at least partially overlap in the second direction (Y-axis direction). Due to this configuration, the X-axis tilt can be accurately performed without being tilted to one side by the electromagnetic force between the first coil 1252a and the first magnet 1251a and the electromagnetic force between the second coil 1252b and the second magnet 1251 b.

The third coil 1252c may be disposed opposite to the third magnet 1251 c. Accordingly, as described above, the third coil 1252c may be disposed in the 3 rd-1 case hole 1223a of the third case side 1223. The third coil 1252c may generate an electromagnetic force by using the third magnet 1251c and perform the Y-axis tilting of the mover 1230 and the rotation part 1240 with respect to the housing 1220.

Here, the X-axis tilt refers to a tilt around the X-axis, and the Y-axis tilt refers to a tilt around the Y-axis.

The hall sensor portion 1253 may include a plurality of hall sensors. In one embodiment, the hall sensor portion 1253 may include a first hall sensor 1253a and a second hall sensor 1253 b. The first hall sensor 1253a may be disposed inside the first coil 1252a or the second coil 1252 b. The first hall sensor 1253a may detect a change in magnetic flux at the inner side of the first coil 1252a or the second coil 1252 b. In this way, position sensing may be performed between the first and

second magnets

1251a and 1251b and the first hall sensor 1253 a. In this way, the second camera actuator according to the embodiment can control the X-axis tilt. Further, the first hall sensor 1253a may be provided as a plurality of first hall sensors 1253 a.

The second hall sensor 1253b may be disposed inside the third coil 1252 c. The second hall sensor 1253b can detect a change in the magnetic flux inside the third coil 1252 c. In this way, position sensing may be performed between the third magnet 1251c and the second hall sensor 1253 b. In this way, the second camera actuator according to the embodiment can control the Y-axis tilt.

The substrate portion 1254 may be disposed at a lower portion of the driving portion 1250. The substrate portion 1254 may be electrically connected to the driving coil 1252 and the hall sensor portion 1253. For example, the substrate portion 1254 may be coupled to the driving coil 1252 and the hall sensor portion 1253 using surface-mount technology (SMT). However, the coupling method is not limited thereto. Further, the substrate portion 1254 may be formed in various shapes to electrically connect with another camera actuator coupled to the second camera actuator described herein. In addition, the base plate portion 1254 may include various grooves or holes to easily couple with the case 1220.

In one embodiment, the substrate portion 1254 may be disposed between and coupled to the shield 1210 and the housing 1220. The coupling may be performed using various methods as described above. In addition, the driving coil 1252 and the hall sensor portion 1253 may be provided on an outer side surface of the case 1220.

The substrate part 1254 may include a circuit board having a wiring pattern that can be electrically connected, for example, a rigid Printed Circuit Board (PCB), a flexible PCB, and a rigid flexible PCB. However, the circuit board is not limited thereto.

Fig. 5a is a perspective view of a mover according to an embodiment, fig. 5b is a perspective view of the mover in a different direction from fig. 5a, fig. 6a is a perspective view of a prism holder according to the embodiment, fig. 6b is a bottom view of the prism holder according to the embodiment, fig. 6c is a side view of the prism holder according to the embodiment, and fig. 6d is another side view of the prism holder according to the embodiment.

Referring to fig. 5a and 5b, a prism 1232 may be disposed on the prism holder. The prism 1232 may be a right-angle prism serving as a reflection part, but the present invention is not limited thereto.

In one embodiment, the prism 1232 may have a protrusion 1232a formed on a portion of the outer surface. The prism 1232 may be easily coupled to the prism holder by the protrusion 1232 a. Further, the prism 1232 may be seated on the seating surface of the prism holder through the bottom surface 1232 b. Accordingly, the bottom surface 1232b of the prism 1232 may correspond to the seating surface of the prism holder. In one embodiment, the bottom surface 1232b may be formed as an inclined surface in the same manner as the seating surface of the prism holder. Accordingly, it is possible to prevent the prism 1232 from being separated from the prism holder due to the movement when the prism moves according to the movement of the prism holder.

Further, as described above, the prism 1232 may be formed of a structure that may reflect light reflected from the outside (e.g., an object) toward the inside of the camera module. In an embodiment, the prism 1232 may be comprised of a single mirror. In addition, the prism 1232 may change the path of the reflected light and may improve the spatial restriction of the first and second camera actuators. Accordingly, it should be appreciated that the camera module may extend the optical path and provide a high magnification range while minimizing the thickness of the camera module. Further, it is understood that a camera module including the camera actuator according to the embodiment may extend an optical path and provide a high magnification range while minimizing the thickness of the camera module.

Referring to fig. 6a to 6d, the prism holder 1231 may include a seating surface 1231k on which the prism 1232 is seated. The seating surface 1231k may be an inclined surface. Further, the prism holder 1231 may include a stepped portion 1231b provided at an upper portion of the seating surface 1231 k. Further, in the prism holder 1231, the stepped portion 1231b may be coupled to the protrusion 1232a of the prism 1232.

Further, the prism holder 1231 may include a plurality of outer side surfaces. The prism holder 1231 may include a first prism outer surface 1231S1, a second prism outer surface 1231S2, a third prism outer surface 1231S3, and a fourth prism outer surface 1231S 4.

The first prism outer side surface 1231S1 may be disposed to face the second prism outer side surface 1231S 2. That is, the first prism outer side surface 1231S1 may be disposed to be symmetrical to the second prism outer side surface 1231S2 with respect to the first direction (X-axis direction).

The first prism outer side surface 1231S1 may be disposed to correspond to the first case side. That is, the first prism outer side surface 1231S1 may be disposed to face the first case side. Further, the second prism outer side surface 1231S2 may be disposed to face the second case side.

In addition, the first prism outer side surface 1231S1 may include a first seating groove 1231S1 a. In addition, the second prism outer side surface 1231S2 may include a second seating groove 1231S2 a. The first seating groove 1231S1a and the second seating groove 1231S2a may be disposed to be symmetrical with respect to the first direction (X-axis direction).

In addition, the first seating grooves 1231S1a and the second seating grooves 1231S2a may be disposed to overlap in the second direction (Y-axis direction). In addition, the first magnet 1251a may be disposed in the first seating groove 1231S1a, and the second magnet 1251b may be disposed in the second seating groove 1231S2 a. The first magnet 1251a and the second magnet 1251b may also be disposed to be symmetrical to each other with respect to the first direction (X-axis direction).

As described above, the electromagnetic force caused by each magnet may be coaxially disposed with the first and second prism outer side surfaces 1231S1 and 1231S2 due to the positions of the first and second seating grooves and the first and second magnets. For example, a region where an electromagnetic force is applied on the first prism outer side surface 1231S1 (e.g., a portion where the electromagnetic force is strongest) and a region where an electromagnetic force is applied on the second prism outer side surface 1231S2 (e.g., a portion where the electromagnetic force is strongest) may be disposed on an axis parallel to the second direction (Y-axis direction). In this way, the X-axis tilt can be accurately performed.

The first magnet 1251a may be disposed in the first seating groove 1231S1a, and the second magnet 1251b may be disposed in the second seating groove 1231S2 a.

The third prism outer side surface 1231S3 may be an outer side surface that is in contact with the first prism outer side surface 1231S1 and the second prism outer side surface 1231S2 and extends in the second direction (Y-axis direction) from the side of the first prism outer side surface 1231S1 and the side of the second prism outer side surface 1231S 2. Further, the third prism outer side surface 1231S3 may be disposed between the first prism outer side surface 1231S1 and the second prism outer side surface 1231S 2. The third prism outer side surface 1231S3 may be a bottom surface of the prism holder 1231.

In addition, the third prism outer side surface 1231S3 may include a third seating groove 1231S3 a. The third magnet 1251c may be disposed in the third seating groove 1231S3 a. The third prism outer side surface 1231S3 may be disposed to face the third case side 1223. Further, the 3 rd-1 housing hole 1223a may at least partially overlap with the third seating groove 1231S3a in the first direction (X-axis direction). Accordingly, the third magnet 1251c in the third seating groove 1231S3a and the third coil 1252c in the 3-1 th housing hole 1223a may be disposed to face each other. In addition, the third magnet 1251c and the third coil 1252c may generate an electromagnetic force so that the second camera actuator may tilt about the Y-axis.

In addition, although the X-axis tilting is performed by a plurality of magnets (the first magnet 1251a and the second magnet 1251b), the Y-axis tilting may be performed only by the third magnet 1251 c. In one embodiment, the area of the third seating groove 1231S3a may be larger than that of the first seating groove 1231S1a or the second seating groove 1231S2 a. Due to this configuration, the Y-axis tilt can be performed by current control similar to the X-axis tilt.

The fourth prism outer surface 1231S4 may be an outer surface that is in contact with the first and second prism outer surfaces 1231S1 and 1231S2 and extends in the first direction (X-axis direction) from the first and second prism outer surfaces 1231S1 and 1231S 2. Further, the fourth prism outer side surface 1231S4 may be disposed between the first prism outer side surface 1231S1 and the second prism outer side surface 1231S 2.

The fourth prism outer side surface 1231S4 may include a fourth seating groove 1231S4 a. The inclined guide part 1241 may be disposed in the fourth seating groove 1231S4 a. In addition, the first and

second members

1231a and 1226 may be disposed in the fourth seating groove 1231S4 a. In addition, the fourth seating groove 1231S4a may include a plurality of regions, for example, a first region AR1, a second region AR2, and a third region AR 3.

The first member 1231a may be disposed in the first area AR 1. That is, the first area AR1 may overlap the first member 1231a in the first direction (X-axis direction).

The second member 1226 may be disposed in the second area AR 2. That is, the second area AR2 may overlap with the second member 1226 in the first direction (X-axis direction).

The inclined guide 1241 may be provided in the third area AR 3. That is, the third area AR3 may overlap the inclined guide 1241 in the first direction (X-axis direction). In addition, the third area AR3 may be disposed between the first area AR1 and the second area AR 2. Further, in the present embodiment, the first area AR1 includes an area overlapping both the first member 1231a and the projection of the inclined guide 1241 in the first direction (X-axis direction). The second area AR2 includes an area overlapping with both the protruding portion of the inclined guide portion 1241 and the second member 1226 in the first direction (X-axis direction). The third area AR3 will be described based on an area that overlaps with the tilt guide 1241 in the third direction (Z-axis direction), but does not overlap with the first member 1231a and the second member 1226 in the first direction (X-axis direction).

In addition, the fourth seating groove 1231S4a may include a first groove gr 1. The first magnet 1242 may be seated in the first groove gr 1. In addition, the first grooves gr1 may be provided as a plurality of first grooves gr1 according to the number of the first magnets 1242. That is, the number of the first grooves gr1 may correspond to the number of the first magnets 1242.

Further, in the embodiment, the second area AR2 may be spaced apart from the first area AR1 in the third direction (Z-axis direction), and the third area AR3 is interposed between the second area AR2 and the first area AR 1.

Further, in the fourth seating groove 1231S4a, the first groove gr1 and the second region AR2 may overlap the prism in the first direction (X-axis direction). In other words, the length of the fourth seating groove 1231S4a in the third direction (Z-axis direction) may be greater than the length of the inclined guide part 1241 in the third direction (Z-axis direction). Accordingly, the bottom surface of the fourth seating groove 1231S4a may be disposed adjacent to the third seating groove 1231S3 a. Due to this configuration, the tilt guide may be disposed adjacent to the center of gravity of the mover. Therefore, the moment value for tilting the mover can be minimized. Further, it is possible to minimize the consumption of current applied to the coil part or the like to tilt the mover.

In one embodiment, the first, second, and third regions AR1, AR2, and AR3 may have different heights in the first direction (X-axis direction) in the fourth prism outer side surface 1231S 4.

Fig. 7a is a perspective view of an inclined guide part according to an embodiment, fig. 7b is a perspective view of an inclined guide part in a different direction from fig. 7a, and fig. 7c is a sectional view of an inclined guide part taken along line AA' in fig. 7 a.

Referring to fig. 7a to 7c, the tilt guide part 1241 according to the embodiment may include a base BS, a first protrusion PR1 protruding from a first surface 1241a of the base BS, and a second protrusion PR2 protruding from a second surface 1241b of the base BS. According to this structure, the surfaces on which the first protruding portion and the second protruding portion are formed may be reversed, but in this specification, description will be made based on the above.

First, the base BS may include a first surface 1241a and a second surface 1241b opposite to the first surface 1241 a. That is, the first surface 1241a may be spaced apart from the second surface 1241b in the third direction (Z-axis direction), and the first surface 1241a and the second surface 1241b may be outer side surfaces opposite or opposite to each other within the inclined guide 1241.

The inclined guide part 1241 may include a first protrusion PR1 extending from the first surface 1241a toward one side. According to an embodiment, the first protrusion PR1 may protrude from the first surface 1241a towards the mover. The first protrusion part PR1 may be provided as a plurality of first protrusion parts PR1, and may include a 1 st-1 st protrusion part PR1a and a 1 st-2 nd protrusion part PR1 b.

The 1 st-1 st protrusion PR1a and the 1 st-2 nd protrusion PR1b may be arranged side by side in the first direction (X-axis direction). In other words, the 1 st-1 st protrusion PR1a and the 1 st-2 nd protrusion PR1b may overlap in the first direction (X-axis direction). Further, in the present embodiment, the 1 st-1 st protruding portion PR1a and the 1 st-2 nd protruding portion PR1b may be bisected by an imaginary line extending in the first direction (X-axis direction).

In addition, the 1 st-1 st protrusion PR1a and the 1 st-2 nd protrusion PR1b may have a curvature, for example, a hemispherical shape, respectively. In addition, the 1 st-1 st and 1 st-2 nd protrusions PR1a and PR1b may contact the first groove of the housing at a point most spaced apart from the first surface 1241a of the base BS.

Further, the inclined guide part 1241 may include a second protrusion PR2 extending from the second surface 1241b toward one side. According to an embodiment, the second protrusion PR2 may protrude from the second surface 1241b toward the case. In addition, the second protrusion part PR2 may be provided as a plurality of second protrusion parts PR2, and include the 2 nd-1 st protrusion part PR2a and the 2 nd-2 nd protrusion part PR2b in the present embodiment.

The 2-1 st protrusion PR2a and the 2-2 nd protrusion PR2b may be arranged side by side in the second direction (Y-axis direction). That is, the 2 nd-1 st protrusion PR2a and the 2 nd-2 nd protrusion PR2b may overlap in the second direction (Y-axis direction). Further, in the present embodiment, the 2 nd-1 st protruding portion PR2a and the 2 nd-2 nd protruding portion PR2b may be bisected by an imaginary line extending in the second direction (Y-axis direction).

The 2 nd-1 st and 2 nd-2 nd protrusions PR2a and PR2b may have curvatures, such as hemispheric shapes, respectively. In addition, the 2 nd-1 st and 2 nd-2 nd protrusions PR2a and PR2b may contact the first member 1231a at a point spaced apart from the second surface 1241b of the base BS.

The 1 st-1 st and 1 st-2 st protruding portions PR1a and PR1b may be disposed in the second direction in a region between the 2 nd-1 st and 2 nd protruding portions PR2a and PR2 b. According to this embodiment, the 1 st-1 st protruding portion PR1a and the 1 st-2 nd protruding portion PR1b may be disposed at the center of the separation space between the 2 nd-1 st protruding portion PR2a and the 2 nd-2 nd protruding portion PR2b in the second direction. Due to this configuration, the actuator according to the embodiment can make the inclination angle of the X axis have the same range with respect to the X axis. In other words, the tilt guide 1241 may make the X-axis tilt of the mover the same with respect to the X-axis with respect to the possible ranges (e.g., positive/negative ranges) of the 1 st-1 st and 1 st-2 nd protrusions PR1a and PR1 b.

Also, the 2 nd-1 protruding portion PR2a and the 2 nd-2 protruding portion PR2b may be disposed in a region between the 1 st-1 protruding portion PR1a and the 1 st-2 protruding portion PR1b in the first direction. According to this embodiment, the 2 nd-1 st and 2 nd-2 nd protrusion parts PR2a and PR2b may be disposed at the center of the separation space between the 1 st-1 st and 1 st-2 nd protrusion parts PR1a and PR1b in the first direction. Due to this configuration, the actuator according to the embodiment can make the inclination angle of the Y axis have the same range with respect to the X axis. In other words, the tilt guide 1241 and the mover may make the Y-axis tilt possible range (e.g., positive/negative range) the same with respect to the Y-axis with respect to the 2-1 st protruding part PR2a and the 2-2 nd protruding part PR2 b.

Specifically, the first surface 1241a may include a first outer line M1, a second outer line M2, a third outer line M3, and a fourth outer line M4. The first and second outer side lines M1 and M2 may face each other, and the third and fourth outer side lines M3 and M4 may face each other. In addition, the third and fourth outer lines M3 and M4 may be disposed between the first and second outer lines M1 and M2. In addition, although the first and second outer lines M1 and M2 are perpendicular to the first direction (X-axis direction), the third and fourth outer lines M3 and M4 may be parallel to the first direction (X-axis direction).

In this case, the first protrusion PR1 may be disposed on the first imaginary line VL 1. Here, the first imaginary line VL1 is a line that bisects each of the first outer side line M1 and the second outer side line M2. Therefore, the tilt guide part 1241 can easily perform the X-axis tilt by the first protrusion PR 1. Further, since the tilt guide part 1241 performs the X-axis tilt with respect to the first imaginary line VL1, the rotational force may be uniformly applied to the tilt guide part 1241. Therefore, the X-axis tilting can be accurately performed, and the device reliability can be improved.

Further, the 1 st-1 st and 1 st-2 nd protrusion portions PR1a and PR1b may be symmetrically disposed about the first and second imaginary lines VL1 and VL 2. Alternatively, the 1 st-1 st and 1 st-2 st protrusions PR1a and PR1b may be disposed to be symmetrical with respect to the first center point C1. Due to this configuration, the supporting force supported by the first protrusion PR1 during tilting of the X axis can be uniformly applied to the upper and lower sides of the tilt guide with respect to the second imaginary line VL 2. Therefore, the reliability of the inclined guide portion can be improved. Here, the second imaginary line VL2 is a line that bisects each of the third outer line M3 and the fourth outer line M4. Further, the first center point C1 may be an intersection between the first imaginary line VL1 and the second imaginary line VL 2. Alternatively, the first center point C1 may be a point corresponding to the center of gravity according to the shape of the inclined guide part 1241.

In addition, the second surface 1241b may include a fifth outer line M1 ', a sixth outer line M2', a seventh outer line M3 ', and an eighth outer line M4'. The fifth outer side line M1 'and the sixth outer side line M2' may face each other, and the seventh outer side line M3 'and the eighth outer side line M4' may face each other. In addition, seventh and eighth outer lines M3 'and M4' may be disposed between fifth and sixth outer lines M1 'and M2'. In addition, although the fifth outer side line (M1 ') and the sixth outer side line (M2') are perpendicular to the first direction (X-axis direction), the seventh outer side line (M3 ') and the eighth outer side line (M4') may be parallel to the first direction (X-axis direction).

In addition, since the tilt guide part 1241 performs the Y-axis tilt with respect to the fourth imaginary line VL 2', the rotational force may be uniformly applied to the tilt guide part 1241. Therefore, the Y-axis tilting can be accurately performed, and the device reliability can be improved.

Also, the 2 nd-1 st and 2 nd-2 nd protrusion portions PR2a and PR2b may be symmetrically disposed on the fourth imaginary line VL2 'with respect to the third imaginary line VL 1'. Alternatively, the 2 nd-1 st and 2 nd-2 nd protrusions PR2a and PR2b may be symmetrically disposed with respect to the second center point C1'. Due to this configuration, the supporting force supported by the second protrusion PR2 during tilting of the Y-axis may be uniformly applied to the upper and lower sides of the tilt guide with respect to the fourth imaginary line VL 2'. Therefore, the reliability of the inclined guide portion can be improved. Here, the third imaginary line VL1 ' is a line that bisects each of the fifth outer line M1 ' and the sixth outer line M2 '. Further, the second center point C1 ' may be an intersection between the third imaginary line VL1 ' and the fourth imaginary line VL2 '. Alternatively, the second center point C1' may be a point corresponding to the center of gravity according to the shape of the inclined guide part 1241.

Further, the interval DR2 in the first direction (X-axis direction) between the 1 st-1 st protrusion PR1a and the 1 st-2 st protrusion PR1b may be greater than the length of the second protrusion PR2 in the first direction (X-axis direction). Accordingly, the X-axis tilting may be performed with respect to the 1 st-1 st and 1 st-2 nd protrusion parts PR1a and PR1b while minimizing resistance due to the second protrusion part PR 2.

Accordingly, the interval ML2 in the second direction (Y-axis direction) of the 2-1 st protruding portion PR2a and the 2-2 nd protruding portion PR2b may be greater than the length of the first protruding portion PR1 in the second direction (Y-axis direction). Accordingly, it is possible to minimize resistance due to the first protrusion part PR1 while performing Y-axis tilting with respect to the 2-1 st protrusion part PR2a and the 2-2 nd protrusion part PR2 b.

Fig. 8a is a perspective view of a second camera actuator according to an embodiment with the shield case and the substrate removed, fig. 8b is a sectional view taken along a line BB 'in fig. 8a, and fig. 8c is a sectional view taken along a line CC' in fig. 8 a.

Referring to fig. 8a to 8c, the first coil 1252a may be disposed on the first housing side 1221, and the first magnet 1251a may be disposed on the first prism outer side surface 1231S1 of the prism holder 1231. Accordingly, the first coil 1252a and the first magnet 1251a may be disposed to be opposite to each other. The first magnet 1251a may at least partially overlap the first coil 1252a in the second direction (Y-axis direction).

Also, the second coil 1252b may be disposed on the second case side 1222, and the second magnet 1251b may be disposed on the second prism outer side surface 1231S2 of the prism holder 1231. Accordingly, the second coil 1252b and the second magnet 1251b may be disposed to face each other. The second magnet 1251b may at least partially overlap the second coil 1252b in a second direction (Y-axis direction).

Further, the first coil 1252a and the second coil 1252b may overlap in the second direction (Y-axis direction), and the first magnet 1251a and the second magnet 1251b may overlap in the second direction (Y-axis direction).

With this structure, as described above, the electromagnetic force applied to the outer side surfaces (the first prism outer side surface and the second prism outer side surface) of the prism holder is on an axis parallel to the second direction (the Y-axis direction), and the X-axis tilt can be performed accurately and precisely.

In addition, the second protruding parts PR2a and PR2b of the inclined guide part 1241 may contact the case 1220. Further, in the case of performing X-axis tilting, the second protruding portions PR2a and PR2b may be tilted reference axes (or rotation axes). Accordingly, the tilt guide 1241 and the mover 1230 may move vertically.

Further, as described above, the first hall sensor 1253a may be provided outside to be electrically connected and coupled with the substrate portion 1254. However, the position of the first hall sensor 1253a is not limited thereto.

Also, a third coil 1252c may be provided on the third case side 1223, and a third magnet 1251c may be provided on the third prism outer side surface 1231S3 of the prism holder 1231. The third coil 1252c and the third magnet 1251c may at least partially overlap in the first direction (X-axis direction). Therefore, the intensity of the electromagnetic force between the third coil 1252c and the third magnet 1251c can be easily controlled.

As described above, the slanted guide 1241 may be disposed on the fourth prism outer side surface 1231S4 of the prism holder 1231. In addition, the inclined guide part 1241 may be seated in the fourth seating groove 1231S4a of the fourth prism outer side surface. As described above, the fourth seating groove 1231S4a may include the above-described first, second, and third regions AR1, AR2, and AR 3.

The first member 1231a may be disposed in the first area AR1, and the first member 1231a may include a second protrusion groove PH 2. The second protrusion groove PH2 may be provided on a surface of the first member 1231a in a direction toward the inclined guide 1241, i.e., a surface of the first member 1231a facing the inclined guide 1241.

Further, the length of the first member 1231a in the second direction (Y-axis direction) may be longer than the length of the inclined guide part 1241. Further, the first member 1231a may be disposed in the first area AR 1. Further, the first member 1231a may be disposed in the first area AR1, coupled to the mover 1230, and rotated. The first member 1231a may be integrally formed with the mover 1230 or separately formed. Due to this configuration, the repulsive force RF2 generated in the first magnet 1242 may be transferred to the first member 1231a (RF 2') of the mover 1230. Accordingly, the first member 1231a may apply a force to the inclined guide 1241 in the same direction as the repulsive force RF2 generated by the first magnet 1242. Also, the second protrusion PR2 of the inclined guide part 1241 may be received in the second protrusion groove PH 2. The second member 1226 may be disposed in the second area AR 2. The second member 1226 may include a second groove gr2 facing the first groove gr 1. In addition, the second member 1226 may include a first protrusion groove PH1 disposed on a surface opposite to the second groove gr 2. The first protrusion groove PH1 and the first groove gr1 may overlap in the third direction (Z-axis direction). Accordingly, the X-axis tilting may be accurately performed with respect to the first protrusion PR1 received in the first protrusion groove PH 1.

In addition, the first protrusion PR1 of the inclined guide part 1241 may be received in the first protrusion groove PH 1. Accordingly, the first protrusion PR1 may contact the first protrusion groove PH 1. The maximum diameter of the first protrusion groove PH1 may correspond to the maximum diameter of the first protrusion PR 1. This may be equally applied to the second protrusion groove PH2 and the second protrusion PR 2. That is, the maximum diameter of the second protrusion groove PH2 may correspond to the maximum diameter of the second protrusion PR 2. In addition, the second protrusion PR2 may be in contact with the second protrusion groove PH 2. Due to this configuration, the first-axis inclination with respect to the first protruding portion PR1 and the second-axis inclination with respect to the second protruding portion PR2 can easily occur, and the inclination radius can be improved.

The inclined guide 1241 may be provided in the third area AR 3. As described above, the inclined guide part 1241 may include the first protrusion PR1 and the second protrusion PR 2. Here, the first and second protrusions PR1 and PR2 may be disposed on the second and

first surfaces

1241b and 1241a of the base BS, respectively. In this way, even in another embodiment to be described below, the first protrusion PR1 and the second protrusion PR2 may be disposed on the opposite facing surfaces of the base BS in various ways. Also, it should be understood that the first and second protrusion grooves PH1 and PH2, in which the first and second protrusion parts PR1 and PR2 are received, respectively, may also be changed to correspond to the shapes and positions of the first and second protrusion parts PR1 and PR 2.

Further, the prism 1232 may at least partially overlap with the slanted guide 1241 in the first direction (X-axis direction). In addition, the prism 1232 may overlap the first and

second magnets

1242 and 1243 in the first direction (X-axis direction). In other words, in the present embodiment, the fourth seating groove 1231S4a may overlap the prism 1232 in the first direction (X-axis direction). In this way, the camera actuator according to the embodiment can minimize the length of the fourth seating groove 1231S4a in the third direction (Z-axis direction) and provide a structure suitable for miniaturization. Therefore, it is also possible to miniaturize a camera module including the camera actuator according to the embodiment. Further, the prism 1232 and the inclined guide 1241 may be adjacently disposed. In other words, the tilt guide may be disposed adjacent to the center of gravity of the mover. In this way, the camera actuator according to the embodiment may minimize a torque value to tilt the mover, and minimize an amount of current applied to the coil part or the like to tilt the mover. Therefore, power consumption can be reduced, and device reliability can be improved.

Fig. 9 is a diagram illustrating a driving part according to an embodiment.

Referring to fig. 9, as described above, the driving part 1250 includes the driving magnet 1251, the driving coil 1252, the hall sensor part 1253, and the substrate part 1254.

Further, as described above, the driving magnet 1251 may include the first magnet 1251a, the second magnet 1251b, and the third magnet 1251c that provide driving force due to electromagnetic force. The first, second, and

third magnets

1251a, 1251b, and 1251c may be respectively disposed on the outer side surfaces of the prism holder 1231.

Further, the driving coil 1252 may include a plurality of coils. In one embodiment, the driving coil 1252 may include a first coil 1252a, a second coil 1252b, and a third coil 1252 c.

The first coil 1252a may be disposed opposite to the first magnet 1251 a. Accordingly, as described above, the first coil 1252a may be disposed in the first housing hole 1221a of the first housing side 1221. Also, the second coil 1252b may be disposed opposite to the second magnet 1251 b. Accordingly, as described above, the second coil 1252b may be disposed in the second housing hole 1222a of the second housing side 1222.

The second camera actuator according to the embodiment may control the mover 1230 to rotate about the first axis (X-axis direction) or about the second axis (Y-axis direction) due to the electromagnetic force between the driving magnet 1251 and the driving coil 1252. Thus, in implementing OIS, the occurrence of the offset or tilt phenomenon can be minimized and optimal optical characteristics can be provided.

Further, according to the present embodiment, by the inclined guide 1241 of the rotation part 1240 disposed between the housing 1220 and the mover 1230, OIS can be implemented to remove the size limitation of the actuator, and an ultra-thin, ultra-small camera actuator and a camera module including the same can be provided.

Base plate portion 1254 may include a first base plate side 1254a, a second base plate side 1254b, and a third base plate side 1254 c.

First and

second substrate sides

1254a and 1254b may be disposed to face each other. Also, a third substrate side 1254c may be disposed between first substrate side 1254a and second substrate side 1254 b.

Further, a first substrate side 1254a may be disposed between the first housing side and the shield can, and a second substrate side 1254b may be disposed between the second housing side and the shield can. Further, a third substrate side 1254c may be disposed between the third housing side and the shield case, and may be a bottom surface of the substrate portion 1254.

The first substrate side 1254a may be coupled and electrically connected to the first coil 1252 a. Further, the first substrate side 1254a may be coupled and electrically connected to the first hall sensor 1253 a.

The second substrate side 1254b may be coupled and electrically connected to the second coil 1252 b. It should also be understood that the second substrate side 1254b may be coupled and electrically connected to the first hall sensor.

Third substrate side 1254c may be coupled and electrically connected to third coil 1252 c. Further, the third substrate side 1254c can be coupled and electrically connected to the second hall sensor 1253 b.

Fig. 10a is a perspective view of a second camera actuator according to an embodiment, fig. 10b is a sectional view taken along a line DD' in fig. 10a, and fig. 10c is an exemplary view of movement of the second camera actuator shown in fig. 10 b.

Referring to fig. 10a to 10c, Y-axis tilting may be performed. That is, rotation may occur in the first direction (X-axis direction), and OIS may be implemented.

In one embodiment, the third magnet 1251c disposed at a lower portion of the prism holder 1231 may form an electromagnetic force with the third coil 1252c and may tilt or rotate the mover 1230 with respect to the second direction (Y-axis direction).

Specifically, the repulsive force between the first and

second magnets

1242 and 1243 may be transmitted to the first and

second members

1231a and 1226 and to the inclined guide 1241 disposed between the first and

second members

1231a and 1226. Accordingly, the tilt guide 1241 may be coupled to the mover 1230 and the case 1220 due to the repulsive force.

In addition, the second protrusion PR2 may be supported by the first member 1231 a. Here, in one embodiment, the inclined guide part 1241 may be rotated or inclined with the second protrusion part PR2 protruding toward the first member 1231a as a reference axis (or a rotation axis), i.e., rotated or inclined with respect to the second direction (Y-axis direction). In other words, the inclined guide part 1241 may be rotated or inclined in the first direction (X-axis direction) with the second protrusion part PR2 protruding toward the first member 1231a as a reference axis (or rotation axis).

For example, due to the first electromagnetic forces F1A and F1B between the third magnet 1251c disposed in the third seating groove and the third coil 1252c disposed on the third substrate side, the mover 1230 may be rotated by the first angle θ 1(X1 to X1a) in the X-axis direction and OIS may be implemented. In addition, the mover 1230 may be rotated by a first angle θ 1(X1 to X1a) in the X-axis direction due to the first electromagnetic forces F1A and F1B between the third magnet 1251c disposed in the third seating groove and the third coil 1252c disposed on the third substrate side, and OIS may be implemented. The first angle θ 1 may be in a range of ± 1 ° to ± 3 °, but is not limited thereto.

Fig. 11a is a perspective view of a second camera actuator according to an embodiment, fig. 11b is a sectional view taken along a line EE' in fig. 11a, and fig. 11c is an example diagram of movement of the second camera actuator shown in fig. 11 b.

Referring to fig. 11a to 11c, X-axis tilting may be performed. That is, the mover 1230 may be tilted or rotated in the Y-axis direction, and OIS may be implemented.

In one embodiment, the first and

second magnets

1251a and 1251b provided in the prism holder 1231 may form electromagnetic forces with the first and

second coils

1252a and 1252b, respectively, and tilt or rotate the tilt guide 1241 and the mover 1230 with respect to the first direction (X-axis direction).

Specifically, the repulsive force between the first and

second magnets

1242 and 1243 may be transmitted to the first and

second members

1231a and 1226 and to the inclined guide 1241 disposed between the first and

second members

1231a and 1226. Accordingly, the tilt guide 1241 may be coupled to the mover 1230 and the case 1220 due to the repulsive force described above.

Further, the 1 st-1 st and 1 st-2 nd protrusions PR1a and PR1b may be spaced apart from each other in the first direction (X-axis direction) and supported by the second member 1226. In addition, in one embodiment, the inclined guide part 1241 may be rotated or inclined, i.e., rotated or inclined with respect to the first direction (X-axis direction), with the first protrusion part PR1 protruding toward the second member 1226 as a reference axis (or rotation axis).

In other words, the inclined guide part 1241 may be rotated or inclined in the second direction (Y-axis direction) with the first protruding part PR1 protruding toward the second member 1226 as a reference axis (or rotation axis).

For example, the mover 1230 may be rotated by a second angle θ 2(Y1 to Y1a) in the Y-axis direction due to the second electromagnetic forces F2A and F2B between the first and

second magnets

1251a and 1251b disposed in the first seating groove and the first and

second coils

1252a and 1252b disposed on the first and second substrate sides, and OIS may be implemented. Further, due to the second electromagnetic forces F2A and F2B between the first and

second magnets

1251a and 1251b disposed in the first seating groove and the first and

second coils

1252a and 1252b disposed on the first and second substrate sides, the mover 1230 may be rotated by the second angle θ 2(Y1 to Y1b) in the Y-axis direction and OIS may be implemented. The second angle θ 2 may be in the range of ± 1 ° to 3 °, but is not limited thereto.

The second camera actuator according to the embodiment may control the mover 1230 to rotate in the first direction (X-axis direction) or the second direction (Y-axis direction) due to an electromagnetic force between the driving magnet in the prism holder and the driving coil provided in the housing. In this way, in implementing OIS, the occurrence of a shift or tilt phenomenon can be minimized and optimal optical characteristics can be provided. Further, as described above, "Y-axis tilt" refers to rotation or tilt in a first direction (X-axis direction), and "X-axis tilt" refers to rotation or tilt in a second direction (Y-axis direction).

Further, as described above, since the prism 1232 and the slant guide 1241 are disposed adjacent in the embodiment, the slant guide may be disposed adjacent to the center of gravity of the mover. Accordingly, the camera actuator according to the embodiment may minimize a torque value to tilt the mover, and minimize an amount of current applied to the coil part or the like to tilt the mover. Therefore, the device power consumption can be reduced, and the device reliability can be improved.

Fig. 12a is an exploded perspective view of a second camera actuator according to the second embodiment, and fig. 12b is a perspective view of a housing according to the second embodiment.

Referring to fig. 12a and 12b, the second camera actuator 1200 according to the embodiment includes a shield cover 1210, a case 1220, a mover 1230, a rotation part 1240, a driving part 1250, a first member 1231a, and a second member 1226.

First, the shield cover 1210 may be disposed at an outermost side of the second camera actuator 1200 and disposed to surround the rotation part 1240 and the driving part 1250, which will be described later.

The housing 1220 may be located inside the shield 1210. Further, the case 1220 may be located at an inner side of a substrate portion 1254 described later. The case 1220 may be fastened to be assembled to the shield case 1210.

The second member 1226 may be disposed in the housing 1220. The second member 1226 may be disposed or included within the housing. Further, the second member 1226 may be coupled to the housing 1220. In one embodiment, the second member 1226 may be disposed between the third housing bore 1223a and the fourth housing side 1224. In addition, the second member 1226 may pass through a case groove 1223 b' formed in the third case side 1223 and may be coupled to the third case side 1223.

Accordingly, the second member 1226 may be coupled to the case 1220 and may remain fixed even during the tilting of the mover 1230, which will be described later. In addition, the second member 1226 includes a second groove gr2 on which the second magnet 1243 is seated. Accordingly, the second member 1226 can fix the position of the second magnet 1243 and prevent a change in the supporting force due to the repulsive force. Also, the second member 1226 may be formed integrally with the case 1220 or separately from the case 1220. In the case where the second member 1226 is integrally formed with the case 1220, a coupling force between the second member 1226 and the case 1220 may be improved, and reliability of the camera actuator may be improved. Further, in the case where the second member 1226 is separated from the case 1220, ease of assembly and manufacture of the second member 1226 and the case 1220 may be improved. Hereinafter, the description will be made based on an example in which the second member 1226 is separated from the case 1220. The first case side 1221 and the second case side 1222 may be disposed to face each other. Further, the third case side 1223 and the fourth case side 1224 may be disposed to face each other.

Further, a third case side 1223 and a fourth case side 1224 may be disposed between the first case side 1221 and the second case side 1222.

The third case side 1223 may be in contact with the first case side 1221, the second case side 1222, and the fourth case side 1224. The third case side 1223 may be a bottom surface of the case 1220. The above description of the direction may be equally applicable.

Further, the second housing side 1222 may include a second housing aperture 1222 a. Further, a second coil 1252b described later may be provided in the second housing hole 1222 a.

The first and

second coils

1252a and 1252b may be electrically connected to the substrate portion 1254 and current may flow therein. This current is a component of the electromagnetic force that tilts the second camera actuator about the X-axis.

In addition, the third case side 1223 may include a third case hole 1223a and a case groove 1223 b'.

A third coil 1252c described later may be provided in the third housing hole 1223 a. Third coil 1252c may be coupled to substrate portion 1254. Further, third coil 1252c may be electrically connected to substrate portion 1254 and current may flow therein. This current is a component of the electromagnetic force that tilts the second camera actuator about the Y axis.

A first member 1231a, which will be described later, may be seated in the housing groove 1223 b'. Accordingly, the first member 1231a may be coupled to the third housing side 1223. Although it has been described in the first embodiment that the first member 1231a is easily coupled to the housing 1220 through the 3 rd-2 nd housing hole, hereinafter, the first member 1231a may be seated in a housing groove formed by a protrusion or the like and coupled to the housing 1220.

The fourth case side 1224 may be disposed between the first case side 1221 and the second case side 1222, and may be in contact with the first case side 1221, the second case side 1222, and the third case side 1223.

In addition, the case 1220 may include a receiving part 1225 formed by the first to fourth case sides 1221 to 1224. The second member 1226, the first member 1231a, and the prism holder 1231 may be provided as components in the accommodating part 1225. In addition, the case 1220 may further include a fifth case side facing the fourth case side 1224. In addition, a fifth case side may be disposed between the first case side 1221 and the second case side 1222, and may be in contact with the first case side 1221, the second case side 1222, and the third case side 1223. In addition, the fifth housing side may include an open region and provide a path along which light reflected from the prism 1232 travels. Further, the fifth housing side may include a protrusion, a groove, or the like, and may be easily coupled to another camera actuator adjacent thereto. Due to this structure, by simultaneously providing the optical path and improving the coupling force between the fifth housing side portion in which the opening providing the optical path is formed and another element, the movement of the opening due to the separation or the like can be suppressed and the variation of the optical path can be minimized.

The mover 1230 includes a prism holder 1231 and a prism 1232 disposed on the prism holder 1231. First, the prism holder 1231 may be seated on the receiving part 1225 of the case 1220. The prism holder 1231 may include first to fourth prism outer side surfaces corresponding to the first to fourth case sides 1221, 1222, 1223 and 1224, respectively. In addition, the prism holder 1231 may include a first member 1231a disposed in the fourth seating groove of the fourth prism outer side surface. A detailed description thereof will be given later. The first member 1231a may include a second protrusion groove PH2 formed in a surface of the prism holder 1231 facing the fourth seating groove. A second protrusion of the inclined guide part 1241, which will be described later, may be seated in the second protrusion groove PH 2.

The prism 1232 may be disposed on the prism holder 1231. To this end, the prism holder 1231 may have a seating surface, which may be formed of an accommodation groove. In one embodiment, the prism 1232 may be formed by a mirror. Hereinafter, a description is given based on the prism 1232 being formed as a mirror, but as in the above-described embodiment, the prism 1232 may be formed as a plurality of lenses. For example, the prism 1232 may include a reflective portion disposed therein. However, the present invention is not limited thereto. In addition, the prism 1232 may reflect light reflected from the outside (e.g., an object) toward the inside of the camera module. In other words, the prism 1232 may change the path of the reflected light and improve the spatial constraints of the first and second camera actuators. Thus, it should be appreciated that in this manner, the camera module may extend the optical path and provide a high magnification range while minimizing the thickness of the camera module.

Further, the first member 1231a may be coupled to the prism holder 1231. The first member 1231a may be in contact with a protrusion provided in a region other than the fourth seating groove on the fourth prism outer side surface of the prism holder 1231. The first member 1231a may be integrally formed with the prism holder 1231. Alternatively, the first member 1231a may be formed of a structure separate from the prism holder 1231.

The rotation part 1240 includes a tilt guide part 1241 and first and

second magnets

1242 and 1243 having different polarities to press the tilt guide part 1241.

The tilt guide 1241 may be coupled to the mover 1230 and the case 1220. Specifically, the inclined guide 1241 may be disposed between the first member 1231a and the second member 1226, and coupled to the mover 1230 and the case 1220. Therefore, in the third direction (Z-axis direction), the fourth case side 1224, the first member 1231a, the inclined guide 1241, the second member 1226, and the prism holder 1231 may be arranged in order.

The inclined guide part 1241 may be disposed adjacent to the optical axis. In this way, the actuator according to the present embodiment can easily change the optical path in accordance with the inclination about the first axis and the second axis described later.

In addition, the inclined guide part 1241 may include a base, first protrusions on the base disposed to be spaced apart from each other in a first direction (X-axis direction), and second protrusions on the base disposed to be spaced apart from each other in a second direction (Y-axis direction). Further, the first protrusion and the second protrusion may protrude in opposite directions. A detailed description thereof will be provided later.

The first magnet 1242 may be disposed on the fourth disposition groove 1231S4a of the prism holder 1231. Specifically, the first magnet 1242 may be seated on a first recess of the fourth seating recess.

Also, the first and

second magnets

1242 and 1243 may have the same polarity. For example, the first magnet 1242 may be a magnet having an N-pole, and the second magnet 1243 may be a magnet having an N-pole. Or, conversely, the first magnet 1242 may be a magnet having an S-pole and the second magnet 1243 may be a magnet having an S-pole.

Further, the first and

second magnets

1242 and 1243 may generate a repulsive force therebetween since they have the same polarity as described above. Due to this configuration, a repulsive force may be applied to the prism holder 1231 coupled to the first magnet 1242 and the second member 1226 or the case 1220 coupled to the second magnet 1243. The repulsive force applied to the prism holder 1231 may also be transmitted to the first member 1231a, in such a manner that the inclined guide 1241 disposed between the first member 1231a and the second member 1226 is pressed due to the repulsive force. That is, the repulsive force may maintain the force that the slope guide 1241 is disposed between the first member 1231a and the second member 1226. A detailed description thereof will be provided later.

Further, the second member 1226 may include an extension portion extending in the first direction from both sides in the second direction (Y-axis direction). The extension may be coupled to the first housing side 1221 and the second housing side 1222. The coupling may be performed by fastening using the protrusion and the groove as described above. Further, the second member 1226 may be coupled to the first member 1231a and the mover 1230 at least partially overlapping the second member 1226 in the first direction, in addition to being disposed in the housing groove 1223 b' and coupled to the housing 1220. Therefore, the coupling force between the respective elements may be improved, and the reliability of the camera actuator may be improved.

The driving part 1250 includes a driving magnet 1251, a driving coil 1252, a hall sensor part 1253, a yoke part 1255, and a substrate part 1254.

The first, second, and

third magnets

The first coil 1252a may be disposed opposite to the first magnet 1251 a. Accordingly, as described above, the first coil 1252a may be disposed in the first housing hole 1221a of the first housing side portion 1221. Also, when a current flows in the first coil 1252a, the first magnet 1251a may generate a force reflecting the magnetic field generated in the first coil 1252 a.

Also, the second coil 1252b may be disposed opposite to the second magnet 1251 b. Accordingly, as described above, the second coil 1252b may be disposed in the second housing hole 1222a of the second housing side 1222. Also, when a current flows in the second coil 1252b, the second magnet 1251b may generate a force reflecting the magnetic field generated in the second coil 1252 b.

The first coil 1252a may be disposed to face the second coil 1252 b. That is, the first coil 1252a may be disposed to be symmetrical to the second coil 1252b with respect to the first direction (X-axis direction). This may apply to the first magnet 1251a and the second magnet 1251 b. That is, the first magnet 1251a and the second magnet 1251b may be disposed to be symmetrical with respect to the first direction (X-axis direction). Further, the first coil 1252a, the second coil 1252b, the first magnet 1251a, and the second magnet 1251b may be disposed to at least partially overlap in the second direction (Y-axis direction). Due to this structure, the electromagnetic force between the first coil 1252a and the first magnet 1251a and the electromagnetic force between the second coil 1252b and the second magnet 1251b can make the X-axis tilt accurately without tilting to one side.

The third coil 1252c may be disposed opposite to the third magnet 1251 c. Accordingly, as described above, the third coil 1252c may be disposed in the third housing hole 1223a of the third housing side 1223. The third coil 1252c may generate an electromagnetic force with the third magnet 1251c and perform Y-axis tilting with respect to the mover 1230 and the rotating part 1240 of the housing 1220.

The hall sensor portion 1253 may include a plurality of hall sensors. In one embodiment, the hall sensor portion 1253 may include a first hall sensor 1253a and a second hall sensor 1253 b. The first hall sensor 1253a may be disposed inside the first coil 1252a or the second coil 1252 b. The first hall sensor 1253a may detect a change in magnetic flux at the inside of the first coil 1252a or the second coil 1252 b. In this way, position sensing may be performed between the first and

second magnets

Also, the second hall sensor 1253b may be disposed inside the third coil 1252 c. The second hall sensor 1253b can detect a change in magnetic flux at the inner side of the third coil 1252 c. In this way, position sensing can be performed between the third magnet 1251c and the second hall sensor 1253 b. In this way, the second camera actuator according to the embodiment can control the Y-axis tilt.

The substrate portion 1254 may be disposed at a lower portion of the driving portion 1250. The substrate portion 1254 may be electrically connected to the driving coil 1252 and the hall sensor portion 1253. For example, the substrate portion 1254 may be coupled to the driving coil 1252 and the hall sensor portion 1253 using SMT. However, the method of coupling is not limited thereto.

The substrate portion 1254 may be disposed between the shield 1210 and the case 1220 and coupled to the shield 1210 and the case 1220. The coupling method may be performed using various methods as described above.

Further, substrate portion 1254 may be formed in various shapes to electrically connect with another camera actuator coupled to the second camera actuator described herein. For example, substrate portion 1254 may include substrate aperture 1254h and may be coupled to sides of the housing (e.g., a first housing side and a second housing side) through substrate aperture 1254 h. Further, the driving coil 1252 and the hall sensor portion 1253 may be provided to an outer side surface of the case 1220 by coupling.

The substrate portion 1254 may include a circuit board having a wiring pattern that can be electrically connected, such as a rigid printed circuit board, a flexible printed circuit board, and a rigid flexible printed circuit board. However, the type of the circuit board is not limited thereto.

The yoke 1255 may include a first yoke 1255a, a second yoke 1255b, and a third yoke 1255 c.

The first yoke 1255a may be disposed on the first magnet 1251 a. Also, the first yoke 1255a may be seated in the first seating groove 1231S1 a. The first yoke 1255a may be coupled to the first magnet 1251a, and the first magnet 1251a may be easily seated in the first seating groove 1231S1 a. Accordingly, the coupling force between the first magnet 1251a and the prism holder 1231 may be improved, and the reliability of the camera actuator may be improved.

Similarly, a second yoke 1255b may be provided on the second magnet 1251 b. In addition, the second yoke 1255b may be seated in the second seating groove 1231S2 a. In addition, the second yoke 1255b may be coupled to the second magnet 1251b, and the second magnet 1251b may be easily seated in the second seating groove 1231S2 a. Accordingly, the coupling force between the second magnet 1251b and the prism holder 1231 may be improved, and the reliability of the camera actuator may be improved.

A third yoke 1255c may be provided on the third magnet 1251 c. In addition, a third yoke 1255c may be seated in the third seating groove 1231S3a and coupled to the third magnet 1251 c. Accordingly, the coupling force between the third magnet 1251c and the prism holder 1231 may be improved and the reliability of the camera actuator may be improved.

Fig. 13a is a perspective view of a prism holder according to an embodiment, fig. 13b is a bottom view of the prism holder according to the embodiment, and fig. 13c is a side view of the prism holder according to the embodiment.

Referring to fig. 13a to 13c, the prism holder 1231 may include a seating surface 1231k on which the prism 1232 is seated. The seating surface 1231k may be an inclined surface. Further, the prism holder 1231 may include a stepped portion 1231b provided at an upper portion of the seating surface 1231 k. Further, in the prism holder 1231, the stepped portion 1231b may be coupled to the protrusion 1232a of the prism 1232.

Further, the prism holder 1231 may include a plurality of outer side surfaces. The prism holder 1231 may include a first prism outer side surface 1231S1, a second prism outer side surface 1231S2, a third prism outer side surface 1231S3, and a fourth prism outer side surface 1231S 4.

The first prism outer side surface 1231S1 may be disposed to correspond to the first case side 1221. That is, the first prism outer side surface 1231S1 may be disposed to face the first case side. Further, the second prism outer side surface 1231S2 may be disposed to face the second case side 1222.

In addition, the first prism outer side surface 1231S1 may include a first seating groove 1231S1 a. In addition, the second prism outer side surface 1231S2 may include a second seating groove 1231S2 a. The first seating groove 1231S1a and the second seating groove 1231S2a may be disposed symmetrically with respect to the first direction (X-axis direction).

In addition, the first seating groove 1231S1a and the second seating groove 1231S2a may be disposed to overlap in the second direction (Y-axis direction).

Further, the first magnet 1251a may be disposed in the first seating groove 1231S1a, and the second magnet 1251b may be disposed in the second seating groove 1231S2 a. The first magnet 1251a and the second magnet 1251b may also be disposed symmetrically with respect to the first direction (X-axis direction).

As described above, due to the first and second seating grooves and the positions of the first and second magnets, the electromagnetic force caused by each magnet may be coaxially provided to the first and second prism outer side surfaces 1231S1 and 1231S 2. For example, a region where an electromagnetic force is applied on the first prism outer side surface 1231S1 (e.g., a portion where the electromagnetic force is strongest) and a region where an electromagnetic force is applied on the second prism outer side surface 1231S1 (e.g., a portion where the electromagnetic force is strongest) may be disposed on an axis parallel to the second direction (Y-axis direction). In this way, the X-axis tilt can be accurately performed.

The third prism outer side surface 1231S3 may be an outer side surface that is in contact with the first prism outer side surface 1231S1 and the second prism outer side surface 1231S2, and extends in the second direction (Y-axis direction) from a side of the first prism outer side surface 1231S1 and a side of the second prism outer side surface 1231S 2. Further, the third prism outer side surface 1231S3 may be disposed between the first prism outer side surface 1231S1 and the second prism outer side surface 1231S 2. The third prism outer side surface 1231S3 may be a bottom surface of the prism holder 1231.

In addition, the third prism outer side surface 1231S3 may include a third seating groove 1231S3 a. The third magnet 1251c may be disposed in the third seating groove 1231S3 a. The third prism outer side surface 1231S3 may be disposed to face the third case side 1223. Further, the third housing hole 1223a may at least partially overlap with the third seating groove 1231S3a in the first direction (X-axis direction). Accordingly, the third magnet 1251c in the third seating groove 1231S3a and the third coil 1252c in the third housing hole 1223a may be disposed to face each other. In addition, the third magnet 1251c and the third coil 1252c may generate an electromagnetic force to tilt the second camera actuator about the Y-axis.

The fourth prism outer side surface 1231S4 may be an outer side surface that is in contact with the first and second prism outer side surfaces 1231S1 and 1231S2, and extends in the first direction (X-axis direction) from the first and second prism outer side surfaces 1231S1 and 1231S 2. In addition, the fourth prism outer side surface 1231S4 may be disposed between the first prism outer side surface 1231S1 and the second prism outer side surface 1231S 2.

second members

The inclined guide part 1241 may be provided in the third area AR 3. That is, the third area AR3 may overlap the inclined guide 1241 in the first direction (X-axis direction). In addition, the third area AR3 may be disposed between the first area AR1 and the second area AR 2.

In the present exemplary embodiment, the first, second, and third areas AR1, AR2, and AR3 may have different heights in the first direction (X-axis direction). In one embodiment, the heights of the first, third, and second regions AR1, AR3, and AR2 in the first direction (X-axis direction) may be sequentially decreased. Accordingly, steps may be formed between the first and third areas AR1 and AR3 and between the third and second areas AR3 and AR 2.

Further, the height may be the largest in the first direction at the first member 1231a disposed in the first region AR1, and the first member 1231a may be supported by a step between the first region AR1 and the third region AR3 and may move while being integrally coupled to the mover.

Also, the fourth seating groove 1231S4a may include a first groove gr 1. The first magnet 1242 may be seated in the first groove gr 1. In addition, the number of the first grooves gr1 may be provided as a plurality of first grooves gr1 according to the number of the first magnets 1242. That is, the number of the first grooves gr1 may correspond to the number of the first magnets 1242.

Further, in the embodiment, the second area AR2 may be spaced apart from the first area AR1 in the third direction (Z-axis direction), and the third area AR3 is disposed between the second area AR2 and the first area AR 1.

Fig. 14a is a perspective view of an inclined guide according to an embodiment, fig. 14b is a perspective view of an inclined guide in a different direction from fig. 14a, and fig. 14c is a sectional view of an inclined guide taken along a line FF' in fig. 14 a.

Referring to fig. 14a to 14c, the tilt guide part 1241 according to the embodiment may include a base BS, a first protrusion PR1 protruding from a first surface 1241a of the base BS, and a second protrusion PR2 protruding from a second surface 1241b of the base BS. Further, as described above, according to the structure, the surfaces on which the first protruding portion and the second protruding portion are formed may be reversed, but the description will be made below based on the above.

First, the base BS may include a first surface 1241a and a second surface 1241b opposite to the first surface 1241 a. That is, the first surface 1241a may be spaced apart from the second surface 1241b in the third direction (Z-axis direction), and the first surface 1241a and the second surface 1241b may be outer side surfaces that are opposite to or face each other within the inclined guide 1241.

The inclined guide part 1241 may include a first protrusion PR1 extending to one side from the first surface 1241 a. According to an embodiment, the first protrusion PR1 may protrude from the first surface 1241a toward the mover. The first protrusion part PR1 may be provided as a plurality of first protrusion parts PR1, and include 1 st-1 st protrusion parts PR1a and 1 st-2 nd protrusion parts PR1 b.

The 1 st-1 st protrusion PR1a and the 1 st-2 nd protrusion PR1b may be disposed side by side in the first direction (X-axis direction). In other words, the 1 st-1 st protrusion PR1a and the 1 st-2 nd protrusion PR1b may overlap in the first direction (X-axis direction). Further, in the present embodiment, the 1 st-1 st protruding portion PR1a and the 1 st-2 nd protruding portion PR1b may be bisected by an imaginary line extending in the first direction (X-axis direction).

In addition, the 1 st-1 st protrusion PR1a and the 1 st-2 nd protrusion PR1b may each have a curvature, for example, a hemispherical shape. In addition, the 1 st-1 st and 1 st-2 st protrusions PR1a and PR1b may contact the first groove gr1 of the housing at a point most spaced apart from the first surface 1241a of the base BS.

Further, the inclined guide part 1241 may include a second protrusion PR2 extending to one side from the second surface 1241 b. According to an embodiment, the second protrusion PR2 may protrude from the second surface 1241b toward the case. In addition, in the present embodiment, the second protrusion part PR2 may be provided as a plurality of second protrusion parts PR2, and include the 2 nd-1 st protrusion part PR2a and the 2 nd-2 nd protrusion part PR2 b.

The 2-1 st protrusion PR2a and the 2-2 nd protrusion PR2b may be disposed side by side in the second direction (Y-axis direction). That is, the 2 nd-1 st protrusion PR2a and the 2 nd-2 nd protrusion PR2b may overlap in the second direction (Y-axis direction). Further, in the present embodiment, the 2 nd-1 st and 2 nd-2 nd protrusion portions PR2a and PR2b may be bisected by a fourth imaginary line VL 2' extending in the second direction (Y-axis direction).

The 2 nd-1 st and 2 nd-2 nd protrusions PR2a and PR2b may each have a curvature, such as a hemispherical shape. In addition, the 2 nd-1 st and 2 nd-2 nd protrusions PR2a and PR2b may contact the first member 1231a at a point spaced apart from the second surface 1241b of the base BS.

The 1 st-1 st and 1 st-2 st protruding portions PR1a and PR1b may be disposed in the second direction in a region between the 2 nd-1 st and 2 nd protruding portions PR2a and PR2 b. According to this embodiment, the 1 st-1 protrusion part PR1a and the 1 st-2 protrusion part PR1b may be disposed at the center of the separation space between the 2 nd-1 protrusion part PR2a and the 2 nd-2 protrusion part PR2b in the second direction. Due to this configuration, the actuator according to the embodiment can tilt the X-axis by the same range of angle with respect to the X-axis. In other words, the tilt guide 1241 may make the X-axis tilt of the mover the same with respect to the X-axis with respect to the possible ranges (e.g., positive/negative ranges) of the 1 st-1 st and 1 st-2 nd protrusions PR1a and PR1 b.

Also, the 2 nd-1 st and 2 nd-2 nd protrusion parts PR2a and PR2b may be disposed in the first direction in a region between the 1 st-1 st and 1 st-2 nd protrusion parts PR1a and PR1 b. According to this embodiment, the 2 nd-1 st and 2 nd-2 nd protrusion parts PR2a and PR2b may be disposed at the center of the separation space between the 1 st-1 st and 1 st-2 nd protrusion parts PR1a and PR1b in the first direction. Due to this configuration, the actuator according to the embodiment can tilt the Y-axis by the same range of angles with respect to the Y-axis. In other words, the range in which the tilt guide 1241 and the mover are possible to tilt the Y axis (e.g., positive/negative range) is the same with respect to the Y axis with respect to the 2 nd-1 st protruding part PR2a and the 2 nd-2 nd protruding part PR2 b.

The first protrusion PR1 may be disposed on the first imaginary line VL 1. Here, the first imaginary line VL1 is a line that bisects the first surface 1241a in the second direction (Y-axis direction). Therefore, the tilt guide part 1241 can easily perform the X-axis tilt by the first protrusion PR 1. Further, since the inclined guide part 1241 performs the X-axis inclination with respect to the first imaginary line VL1, the rotational force may be uniformly applied to the inclined guide part 1241. Therefore, the X-axis tilting can be accurately performed, and the reliability of the apparatus can be improved.

Further, the 1 st-1 st and 1 st-2 nd protrusion portions PR1a and PR1b may be disposed symmetrically with respect to the first and second imaginary lines VL1 and VL 2. Alternatively, the 1 st-1 st and 1 st-2 st protrusions PR1a and PR1b may be disposed to be symmetrical with respect to the first center point C1. Due to this configuration, the supporting force supported by the first protrusion PR1 during the X-axis tilting can be uniformly applied to the upper and lower sides of the tilt guide with respect to the second imaginary line VL 2. Therefore, the reliability of the inclined guide portion can be improved. Here, the second imaginary line VL2 is a line that bisects the first surface 1241a in the first direction (X-axis direction). Further, the first center point C1 may be an intersection between the first imaginary line VL1 and the second imaginary line VL 2. Alternatively, the first center point C1 may be a point corresponding to the center of gravity according to the shape of the inclined guide part 1241.

In addition, since the inclined guide part 1241 performs the Y-axis inclination with respect to the fourth imaginary line VL 2', the rotational force may be uniformly applied to the inclined guide part 1241. Therefore, the Y-axis tilting can be accurately performed, and the device reliability can be improved.

Further, the 2 nd-1 st and 2 nd-2 nd protrusion portions PR2a and PR2b may be disposed to be symmetrical with respect to the third imaginary line VL1 'on the fourth imaginary line VL 2'. Alternatively, the 2 nd-1 st and 2 nd-2 nd protrusions PR2a and PR2b may be disposed to be symmetrical with respect to the second center point C1'. Due to this configuration, the supporting force supported by the second protrusion PR2 during the Y-axis tilting may be uniformly applied to the upper and lower sides of the tilt guide with respect to the fourth imaginary line VL 2'. Therefore, the reliability of the inclined guide portion can be improved. Here, the third imaginary line VL 1' is a line that bisects the second surface 1241b in the second direction (Y-axis direction). The fourth imaginary line VL 2' is a line that bisects the second surface 1241b in the first direction (X-axis direction). Further, the second center point C1 ' may be an intersection between the third imaginary line VL1 ' and the fourth imaginary line VL2 '. Alternatively, the second center point C1' may be a point corresponding to the center of gravity according to the shape of the inclined guide part 1241.

In addition, the above description of the first and second protrusion parts PR1 and PR2 may be equally applied. Further, the shape of the base BS may be variously changed according to the weight or fastening structure of the camera actuator.

Fig. 15a is a perspective view of the second camera actuator according to the embodiment with the shield case and the substrate removed, fig. 15b is a sectional view taken along a line GG 'in fig. 15a, and fig. 15c is a sectional view taken along a line HH' in fig. 15 a.

Referring to fig. 15a to 15c, the first coil 1252a may be disposed on the first housing side 1221, and the first magnet 1251a may be disposed on the first prism outer side surface 1231S1 of the prism holder 1231. Accordingly, the first coil 1252a and the first magnet 1251a may be disposed to be opposite to each other. The first magnet 1251a may at least partially overlap the first coil 1252a in the second direction (Y-axis direction).

Also, a second coil 1252b may be provided on the second case side 1222, and a second magnet 1251b may be provided on the second prism outer side surface 1231S2 of the prism holder 1231. Accordingly, the second coil 1252b and the second magnet 1251b may be disposed opposite to each other. The second magnet 1251b may at least partially overlap the second coil 1252b in a second direction (Y-axis direction).

Due to this configuration, the electromagnetic force applied to the outer side surfaces (the first prism outer side surface and the second prism outer side surface) of the prism holder can be located on an axis parallel to the second direction (the Y-axis direction), and the X-axis tilt can be performed accurately and precisely.

In addition, the second protrusions PR2a and PR2b of the slanted guide part 1241 may contact the case 1220. Further, in the case of performing X-axis tilting, the second protruding portions PR2a and PR2b may be tilted reference axes (or rotation axes). Accordingly, the tilt guide 1241 and the mover 1230 may move vertically.

Further, as described above, the first hall sensor 1253a may be provided outside to be electrically connected and coupled with the substrate portion 1254. However, the first hall sensor 1253a is not limited thereto.

In addition, a third coil 1252c may be located on the third housing side 1223, and a third magnet 1251c may be disposed on the third prism outer side surface 1231S3 of the prism holder 1231. The third coil 1252c and the third magnet 1251c may at least partially overlap in the first direction (X-axis direction). Therefore, the intensity of the electromagnetic force between the third coil 1252c and the third magnet 1251c can be easily controlled.

As described above, the slanted guide 1241 may be disposed on the fourth prism outer side surface 1231S4 of the prism holder 1231. In addition, the inclined guide part 1241 may be seated in the fourth seating groove 1231S4a of the fourth prism outer side surface. As described above, the fourth seating groove 1231S4a may include the first, second, and third regions AR1, AR2, and AR 3.

Further, the length of the first member 1231a in the second direction (Y-axis direction) may be greater than the length of the inclined guide 1241. Further, the first member 1231a may be disposed in the first area AR 1. In addition, the first member 1231a may be disposed in the first area AR1, coupled to the mover 1230, and rotated. The first member 1231a may be integrally formed with the mover 1230 or separately formed. Due to this configuration, the repulsive force RF2 generated in the first magnet 1242 may be transferred to the first member 1231a (RF 2') of the mover 1230. Accordingly, the first member 1231a may apply a force to the inclined guide 1241 in the same direction as the repulsive force RF2 generated in the first magnet 1242. Also, the second protrusion PR2 of the slanted guide part 1241 may be received in the second protrusion groove PH 2.

The second member 1226 may be disposed in the second area AR 2. The second member 1226 may include a second groove gr2 facing the first groove gr 1. In addition, the second member 1226 may include a first protrusion groove PH1 disposed on a surface opposite to the second groove gr 2. The first protrusion groove PH1 and the first groove gr1 may overlap in the third direction (Z-axis direction). Accordingly, the X-axis tilting may be accurately performed with respect to the first protrusion PR1 received in the first protrusion groove PH 1.

In addition, the first protrusion PR1 of the slanted guide part 1241 may be received in the first protrusion groove PH 1. Accordingly, the first protrusion PR1 may contact the first protrusion groove PH 1. The maximum diameter of the first protrusion groove PH1 may correspond to the maximum diameter of the first protrusion PR 1. This may be equally applied to the second protrusion groove PH2 and the second protrusion PR 2. That is, the maximum diameter of the second protrusion groove PH2 may correspond to the maximum diameter of the second protrusion PR 2. Also, the second protrusion PR2 may contact the second protrusion groove PH 2. Due to this configuration, the first-axis inclination with respect to the first protruding portion PR1 and the second-axis inclination with respect to the second protruding portion PR2 can easily occur, and the inclination radius can be improved.

Fig. 16 is a view illustrating a driving part according to an embodiment.

Referring to fig. 16, as described above, the driving part 1250 includes the driving magnet 1251, the driving coil 1252, the hall sensor part 1253, the substrate part 1254, and the yoke part 1255.

third magnets

The second camera actuator according to the embodiment may control the mover 1230 to rotate about the first axis (X-axis direction) or about the second axis (Y-axis direction) due to the electromagnetic force between the driving magnet 1251 and the driving coil 1252. Thus, in implementing OIS, the occurrence of a shift or tilt phenomenon may be minimized and optimal optical characteristics may be provided.

Further, according to the present embodiment, by the inclined guide 1241 of the rotation part 1240 disposed between the case 1220 and the mover 1230, OIS can be implemented to remove the size limitation of the actuator, and an ultra-thin, ultra-small camera actuator and a camera module including the same can be provided.

The above description of yoke portion 1255 and base plate portion 1254 may be equally applied.

Fig. 17a is a perspective view of a second camera actuator according to an embodiment, fig. 17b is a cross-sectional view taken along line MM' in fig. 17a, and fig. 17c is an example diagram of movement of the second camera actuator shown in fig. 17 b.

Referring to fig. 17a to 17c, Y-axis tilting may be performed. That is, it can be rotated in the first direction (X-axis direction), and OIS can be implemented.

In one embodiment, the third magnet 1251c provided at the lower portion of the prism holder 1231 may form an electromagnetic force with the third coil 1252c and may tilt or rotate the mover 1230 with respect to the second direction (Y-axis direction).

Specifically, the repulsive force between the first and

second magnets

1242 and 1243 may be transmitted to the first and

second members

1231a and 1226 and to the inclined guide 1241 disposed between the first and

second members

For example, the mover 1230 may be rotated by a first angle (X1 to X1a) in the X-axis direction due to the first electromagnetic forces F1A and F1B between the third magnet 1251c disposed in the third seating groove and the third coil 1252c disposed on one side of the third substrate, and OIS may be implemented. In addition, the mover 1230 may be rotated by a first angle (X1 to X1b) in the X-axis direction due to the first electromagnetic forces F1A and F1B between the third magnet 1251c disposed in the third seating groove and the third coil 1252c disposed on the third substrate side, and OIS may be implemented. The first angle θ 1 may be in a range of ± 1 ° to ± 3 °. However, it is not limited thereto.

Fig. 18a is a perspective view of a second camera actuator according to an embodiment, fig. 18b is a sectional view taken along a line LL' in fig. 18a, and fig. 18c is an example diagram of movement of the second camera actuator shown in fig. 18 b.

Referring to fig. 18a to 18c, X-axis tilting may be performed. That is, the mover 1230 may be tilted or rotated in the Y-axis direction, and OIS may be implemented.

In one embodiment, the first and

second magnets

1251a and 1251b provided in the prism holder 1231 form electromagnetic force with the first and

second coils

1252a and 1252b, respectively, and may tilt or rotate the tilt guide 1241 and the mover 1230 with respect to the first direction (X-axis direction).

Specifically, the repulsive force between the first and

second magnets

1242 and 1243 may be transmitted to the first and

second members

1231a and 1226 and to the inclined guide 1241 disposed between the first and

second members

Further, the 1 st-1 protruding portion PR1a and the 1 st-2 protruding portion PR1b may be spaced apart from each other in the first direction (X-axis direction) and may be supported by the second member 1226. In addition, in one embodiment, the inclined guide part 1241 may be rotated or inclined with the second protrusion part PR2 protruding toward the first member 1231a as a reference axis (or a rotation axis), i.e., rotated or inclined with respect to the second direction (Y-axis direction). In other words, the inclined guide part 1241 may be rotated or inclined with the first protruding part PR1 protruding toward the second member 1226 as a reference axis (or a rotation axis), i.e., rotated or inclined with respect to the first direction (X-axis direction).

For example, due to the second electromagnetic forces F2A and F2B between the first and

second magnets

1251a and 1251b disposed in the first and second seating grooves and the first and

second coils

1252a and 1252b disposed on the first and second substrate sides, the mover 230 may rotate by the second angle θ 2(Y1 to Y1a) in the Y-axis direction and OIS may be implemented. Further, due to the second electromagnetic forces F2A and F2B between the first and

second magnets

second coils

The second actuator according to the embodiment may control the mover 1230 to rotate in the first direction (X-axis direction) or the second direction (Y-axis direction) due to an electromagnetic force between the driving magnet in the prism holder and the driving coil provided in the housing. Thus, it is possible to minimize the occurrence of the offset or tilt phenomenon and provide the optimal optical characteristics in the course of implementing OIS. Further, as described above, "Y-axis tilt" refers to rotation or tilt in a first direction (X-axis direction), and "X-axis tilt" refers to rotation or tilt in a second direction (Y-axis direction).

Further, as described above, in one embodiment, since the prism 1232 and the slant guide 1241 are disposed adjacent to each other, the slant guide may be disposed adjacent to the center of gravity of the mover. Accordingly, the camera actuator according to the embodiment may minimize a torque value to tilt the mover, and minimize current consumption applied to the coil part and the like to tilt the mover. Therefore, power consumption can be reduced and device reliability can be improved.

Fig. 19a is an exploded perspective view of a second camera actuator according to a third embodiment, and fig. 19b is a perspective view of a housing according to the third embodiment.

Referring to fig. 19a and 19b, the second camera actuator 1200 according to the embodiment includes a shield cover 1210, a case 1220, a mover 1230, a rotation part 1240, a driving part 1250, a first member 1231a, and a second member 1226.

The mover 1230 may include a prism holder 1231 and a prism 1232 disposed on the prism holder 1231. In addition, the rotation part 1240 may include a tilt guide 1241 and a first magnet 1242 and a second magnet 1243 having different polarities to press the tilt guide 1241. Further, the driving part 1250 may include a driving magnet 1251, a driving coil 1252, a hall sensor part 1253, a substrate part 1254, and a yoke part 1255.

First, the shield cover 1210 may be disposed at the outermost side of the second camera actuator 1200 and disposed to surround the rotation part 1240 and the driving part 1250, which will be described later.

The case 1220 may be disposed inside the shield case 1210. Further, the case 1220 may be provided inside a substrate portion 1254 described later. The housing 1220 may be fastened to fit to the shield 1210.

Also, a third case side 1223 and a fourth case side 1224 may be disposed between the first case side 1221 and the second case side 1222.

The third case side 1223 may be in contact with the first case side 1221, the second case side 1222, and the fourth case side 1224. The third case side 1223 may be a bottom surface of the case 1220. In addition, the above description about the direction can be applied similarly.

Further, the first housing side 1221 may include a first housing hole 1221 a. A first coil 1252a described later may be disposed in the first housing hole 1221 a.

Also, the second housing side 1222 may include a second housing aperture 1222 a. Further, a second coil 1252b, which will be described later, may be provided in the second housing hole 1222 a.

The first and

second coils

1252a and 1252b can be electrically connected to the substrate portion 1254 and current can flow therein. This current is a component of the electromagnetic force that tilts the second camera actuator about the X-axis.

A third coil 1252c described later may be provided in the third housing hole 1223 a. Third coil 1252c may be coupled to substrate portion 1254. Further, third coil 1252c may be electrically connected to substrate portion 1254, and current may flow therein. This current is a component of the electromagnetic force that tilts the second camera actuator about the Y axis.

A first member 1231a, which will be described later, may be seated in the housing groove 1223 b'. Accordingly, the first member 1231a may be coupled to the third housing side 1223. As in the second embodiment, the first member 1231a may be seated in a housing groove formed by a protrusion or the like, and may be coupled to the housing 1220.

In addition, the case 1220 may include a receiving part 1225 formed of first to fourth case sides 1221 to 1224. The second member 1226, the first member 1231a, and the mover 1230 may be provided as parts in the accommodating part 1225.

In addition, the case 1220 may further include a fifth case side facing the fourth case side 1224. Further, a fifth case side may be disposed between the first case side 1221 and the second case side 1222, and may be in contact with the first case side 1221, the second case side 1222, and the third case side 1223. In addition, the fifth housing side may include an open region and provide a path along which light reflected from the prism 1232 moves. Further, the fifth housing side may include a protrusion, a groove, or the like, and be easily coupled to another camera actuator adjacent thereto. Due to this configuration, by simultaneously providing the optical path and improving the coupling force between the fifth housing side portion, in which the opening providing the optical path is formed, and the other element, the movement of the opening due to the separation or the like can be suppressed, and the variation in the optical path can be minimized.

Accordingly, even during the tilting of the mover 1230, which will be described later, the second member 1226 may be coupled to the case 1220 and may remain fixed. Further, the second member 1226 includes a second protruding groove in which the second protrusion of the inclined guide is placed. Accordingly, the second member 1226 has the protrusion of the tilt guide disposed adjacent to the prism in the fourth seating groove and the protrusion as the tilt reference axis disposed near the center of gravity of the mover 1230. In this way, since a moment of moving the mover 1230 to perform tilting is minimized during tilting, current consumed for driving the coils may be minimized, and power consumption may be reduced.

Also, the second member 1226 may be formed integrally with the case 1220 or separately from the case 1220. In the case where the second member 1226 is integrally formed with the case 1220, the coupling force between the second member 1226 and the case 1220 may be improved, and the reliability of the camera actuator may be improved. Further, in the case where the second member 1226 is separated from the case 1220, ease of assembly and manufacture of the second member 1226 and the case 1220 may be improved. Hereinafter, description will be made based on the case where the second member 1226 is separated from the case 1220.

The mover 1230 includes a prism holder 1231 and a prism 1232 mounted on the prism holder 1231.

First, the prism holder 1231 may be seated on the receiving part 1225 of the case 1220. The prism holder 1231 may include first to fourth prism outer side surfaces corresponding to the first to fourth case sides 1221, 1222, 1223 and 1224, respectively. Also, the prism holder 1231 may include a first member 1231a disposed on the fourth seating groove 1231S4 a. A detailed description thereof will be provided later.

The prism 1232 may be disposed on the prism holder 1231. To this end, the prism holder 1231 may have a seating surface, which may be formed of an accommodation groove. In one embodiment, the prism 1232 may be formed by a mirror. Hereinafter, description will be made based on a case where the prism 1232 is formed of a reflecting mirror, but the prism 1232 may be formed of a plurality of lenses as in the above-described embodiment. For example, the prism 1232 may include a reflective portion disposed therein. However, the present invention is not limited thereto. In addition, the prism 1232 may reflect light reflected from the outside (e.g., an object) toward the inside of the camera module. In other words, the prism 1232 may change the path of the reflected light and improve the spatial constraints of the first and second camera actuators. Thus, it will be appreciated that in this manner, the camera module can extend the optical path and provide a high magnification range while minimizing the thickness of the camera module.

Further, the first member 1231a may be coupled to the prism holder 1231. The first member 1231a may be in contact with a protrusion provided in a region other than the fourth seating groove in the fourth prism outer side surface of the prism holder 1231. The first member 1231a may be integrally formed with the prism holder 1231. Alternatively, the first member 1231a may be formed of a structure separate from the prism holder 1231.

The rotation part 1240 includes a tilt guide part 1241 and first and

second magnets

1242 and 1243 having different polarities to press the tilt guide part 1241.

The tilt guide 1241 may be coupled to the mover 1230 and the case 1220. Specifically, the inclined guide 1241 may be disposed between the first member 1231a and the second member 1226, and may be coupled to the mover 1230 and the case 1220. However, unlike the above description, in the present embodiment, the inclined guide part 1241 may be provided between the second member 1226 and the prism holder 1231. Specifically, the slanted guide 1241 may be disposed between the second member 1226 and the fourth seating groove 1231S4a of the prism holder 1231.

In the third direction (Z-axis direction), the fourth case side 1224, the first member 1231a, the second member 1226, the inclined guide 1241, and the prism holder 1231 may be arranged in order. In addition, the first and

second magnets

1242 and 1243 may be seated in first and second grooves gr1 and 2 formed in the first and

second members

1231a and 1226, respectively. In this embodiment, the positions of the first and second grooves gr1 and 2 may be different from those of the above-described first and second grooves in other embodiments. However, the first groove gr1 is disposed in the first member 1231a and moves integrally with the mover, and the second groove gr2 is disposed in the second member 1226 to correspond to the first groove gr1 and is coupled to the case 1220. Thus, in the description, the terms will be used interchangeably.

The inclined guide part 1241 may include first protrusions disposed to be spaced apart from each other in a first direction (X-axis direction) and second protrusions disposed to be spaced apart from each other in a second direction (Y-axis direction). Further, the first and second protrusions may protrude in opposite directions, a detailed description of which will be provided later.

Further, as described above, the first magnet 1242 may be seated on the fourth seating groove 1231S4a of the prism holder 1231. Further, a second magnet 1243 may be disposed in the second member 1226.

The first and

second magnets

1242, 1243 may have the same polarity. For example, the first magnet 1242 may be a magnet having an N-pole, and the second magnet 1243 may be a magnet having an N-pole. Alternatively, the first magnet 1242 may be a magnet having an S-pole, and the second magnet 1243 may be a magnet having an S-pole.

The first and

second magnets

1242 and 1243 may generate a repulsive force therebetween due to having the same polarity as described above. Due to this configuration, a repulsive force may be applied to the first member 123a or the prism holder 1231 coupled to the first magnet 1242 and the second member 1226 or the case 1220 coupled to the second magnet 1243. At this time, the repulsive force applied to the first member 1231a may also be transmitted to the prism holder 1231. In this way, the inclined guide part 1241 disposed between the first member 1231a and the second member 1226 may be pressed due to the repulsive force. That is, the repulsive force may maintain the force that the slope guide 1241 is disposed between the first member 1231a and the second member 1226. In this way, even during the X-axis tilt or the Y-axis tilt, the position of the tilt guide 1241 between the mover 1230 and the case 1220 may be maintained.

The driving part 1250 includes a driving magnet 1251, a driving coil 1252, a hall sensor part 1253, a substrate part 1254, and a yoke part 1255. The above description of them applies as well.

Fig. 20a is a perspective view of a prism holder according to an embodiment, fig. 20b is a bottom view of the prism holder according to the embodiment, and fig. 20c is a side view of the prism holder according to the embodiment.

Referring to fig. 20a to 20c, the prism holder 1231 may include a seating surface 1231k on which the prism 1232 is seated. The seating surface 1231k may be an inclined surface. Further, the prism holder 1231 may include a stepped portion 1231b provided at an upper portion of the seating surface 1231 k. Further, in the prism holder 1231, the stepped portion 1231b may be coupled to the protrusion 1232a of the prism 1232.

The prism holder 1231 may include a plurality of outer side surfaces. For example, the prism holder 1231 may include a first prism outer side surface 1231S1, a second prism outer side surface 1231S2, a third prism outer side surface 1231S3, and a fourth prism outer side surface 1231S 4. For this description, the description given in the above embodiments can be equally applied.

Specifically, the fourth prism outer side surface 1231S4 may include a fourth seating groove 1231S4 a. Further, in the fourth seating groove 1231S4a, the first member 1231a, the second member 1226, and the inclined guide 1241 may be sequentially disposed in the third direction (Z-axis direction).

In one embodiment, the fourth seating groove 1231S4a may include a plurality of regions, for example, a first region AR1, a second region AR2, and a third region AR 3.

The inclined guide part 1241 may be provided in the third area AR 3. Further, the third area AR3 may overlap with the inclined guide 1241 in the first direction (X-axis direction).

In addition, the second area AR2 may be disposed between the first area AR1 and the third area AR 3.

In the present exemplary embodiment, the first area AR1, the second area AR2, and the third area AR3 may have different heights in the first direction (X-axis direction). In an embodiment, the height of the first region AR1 in the first direction (X-axis direction) may be greater than the height of the second region AR2 and the third region AR 3. Accordingly, a step may be formed between the first area AR1 and the second area AR 2.

Also, the first member 1231a may include a first groove gr 1. The first magnet 1242 may be seated in the first groove gr 1. In addition, the first grooves gr1 may be provided as a plurality of first grooves gr1 according to the number of the first magnets 1242. That is, the number of the first grooves gr1 may correspond to the number of the first magnets 1242.

Fig. 21a is a perspective view of an inclined guide according to an embodiment, fig. 21b is a perspective view of an inclined guide in a direction different from that of fig. 21a, and fig. 21c is a sectional view of an inclined guide taken along a line FF' in fig. 21 a.

Referring to fig. 21a to 21c, the tilt guide part 1241 according to the embodiment includes a base BS, a first protrusion PR1 protruding from a first surface 1241a of the base BS, and a second protrusion PR2 protruding from a second surface 1241b of the base BS. According to this structure, the surfaces on which the first protruding portion and the second protruding portion are formed may be reversed, but the description will be made below based on the above. In addition, the description given to the foregoing embodiments may be equally applicable.

Fig. 22a is a perspective view of the second camera actuator with the shield case and the substrate removed, fig. 22b is a sectional view taken along a line PP 'in fig. 22a, and fig. 22c is a sectional view taken along a line QQ' in fig. 22a, according to the embodiment.

Referring to fig. 22a to 22c, the first coil 1252a may be disposed on the first housing side 1221, and the first magnet 1251a may be disposed on the first prism outer side surface 1231S1 of the prism holder 1231. Accordingly, the first coil 1252a and the first magnet 1251a may be disposed to be opposite to each other. The first magnet 1251a may at least partially overlap the first coil 1252a in the second direction (Y-axis direction).

Due to this configuration, the electromagnetic force applied to the outer side surfaces (the first prism outer side surface and the second prism outer side surface) of the prism holder can be set on the axis parallel to the second direction (the Y-axis direction), and therefore the X-axis tilt can be performed accurately and precisely.

In addition, the second protrusions PR2a and PR2b of the inclined guide part 1241 may be in contact with the second member 1226 of the case 1220. The second protrusion PR2 may be seated in a second protrusion groove PH2 formed in one side surface of the second member 1226. Further, in the case of performing X-axis tilting, the second protruding portions PR2a and PR2b may be tilted reference axes (or rotation axes). Accordingly, the tilt guide 1241 and the mover 1230 may move vertically.

Also, a third coil 1252c may be disposed on the third case side 1223, and a third magnet 1251c may be disposed on the third prism outer side surface 1231S3 of the prism holder 1231. The third coil 1252c and the third magnet 1251c may at least partially overlap in the first direction (X-axis direction). Therefore, the intensity of the electromagnetic force between the third coil 1252c and the third magnet 1251c can be easily controlled.

The first member 1231a may be disposed in the first region AR1, and the first member 1231a may include a first groove gr 1. Further, as described above, the first magnets 1242 may be disposed in the first grooves gr1, and the repulsive force RF2 generated in the first magnets 1242 may be transmitted to the fourth seating grooves 1231S4a (RF 2') of the prism holder 1231 through the first member 1231 a. Accordingly, the prism holder 1231 may apply a force to the inclined guide 1241 in the same direction as the repulsive force RF2 generated by the first magnet 1242.

The second member 1226 may be disposed in the second area AR 2. The second member 1226 may include a second groove gr2 facing the first groove gr 1. Also, the second member 1226 may include a second protrusion groove PH2 provided on a surface corresponding to the second groove gr 2. In addition, repulsive force RF1 generated at the second magnet 1243 may be applied to the second member 1226. Accordingly, the second member 1226 and the first member 1231a can press the inclined guide 1241 provided between the second member 1226 and the prism holder 1231 by the generated repulsive forces RF1 and RF 2'.

The inclined guide 1241 may be provided in the third area AR 3. As described above, the inclined guide part 1241 may include the first protrusion PR1 and the second protrusion PR 2. Here, the first and second protrusions PR1 and PR2 may be disposed on the respective second and

first surfaces

1241b and 1241a of the base BS. Therefore, even in another embodiment to be described below, the first and second protrusions PR1 and PR2 may be variously disposed on the surfaces of the base BS facing each other.

The first protrusion groove PH1 may be disposed in the fourth seating groove 1231S4 a. In addition, the first protrusion PR1 of the inclined guide part 1241 may be received in the first protrusion groove PH 1. Accordingly, the first protrusion PR1 may contact the first protrusion groove PH 1. The maximum diameter of the first protrusion groove PH1 may correspond to the maximum diameter of the first protrusion PR 1. This may be equally applied to the second protrusion groove PH2 and the second protrusion PR 2. That is, the maximum diameter of the second protrusion groove PH2 may correspond to the maximum diameter of the second protrusion part PR 2. Also, the second protrusion PR2 may be in contact with the second protrusion groove PH 2. Due to this configuration, the inclination with respect to the first axis of the first protruding portion PR1 and the inclination with respect to the second axis of the second protruding portion PR2 can easily occur, and the inclination radius can be improved.

Further, the slant guide 1241 may be disposed side by side with the first and

second members

1231a and 1226 in the third direction (Z-axis direction), and the slant guide 1241 may overlap the prism 1232 in the first direction (X-axis direction). More specifically, in one embodiment, the first protrusion PR1 may overlap the prism 1232 in the first direction (X-axis direction). Further, the first protrusion PR1 may at least partially overlap the third coil 1252c or the third magnet 1251c in the first direction (X-axis direction). That is, in the camera actuator according to the embodiment, each protrusion, which is a central axis of inclination, may be disposed adjacent to the center of gravity of the mover 1230. In this way, the tilt guide may be disposed adjacent to the center of gravity of the mover. In this way, the camera actuator according to the embodiment may minimize a torque value to tilt the mover, and minimize an amount of current applied to the coil part or the like to tilt the mover, and thus may reduce power consumption and may improve device reliability.

Further, the first and

second magnets

1242 and 1243 may not overlap the third coil 1252c or the prism 1232 in the first direction (X-axis direction). In other words, in the present embodiment, the first and

second magnets

1242 and 1243 may be disposed to be spaced apart from the third coil 1252c or the prism 1232 in the third direction (Z-axis direction). In this manner, third coil 1252c may minimize the magnetic force received from first and

second magnets

1242, 1243. Therefore, the camera actuator according to the embodiment can easily perform vertical driving (Y-axis tilting), and minimize power consumption.

Further, as described above, the second hall sensor 1253b provided inside the third coil 1252c can detect the change in the magnetic flux, whereby the position sensing between the third magnet 1251c and the second hall sensor 1253b can be performed. Here, the offset voltage of the second hall sensor 1253b may be changed due to the influence of the magnetic field formed by the first and

second magnets

1242 and 1243.

In the second camera actuator according to the embodiment, the first member 1231a, the first magnet 1242, the second magnet 1243, the second member 1226, and the inclined guide 1241 may be sequentially disposed in the third direction. In one embodiment, the first and

second magnets

1242 and 1243 may be separated from the prism holder 1231 (or the prism 1232) by a distance greater than the separation distance from the rotation plate 1241 in the third direction. In this way, the second hall sensor 1253b at the lower portion of the prism holder 1231 may also be disposed to be spaced apart from the first and

second magnets

1242 and 1243 by a predetermined distance. Accordingly, since the influence of the magnetic field formed by the first and

second magnets

1242 and 1243 on the second hall sensor 1253b can be minimized, the second hall sensor 1253b can prevent the hall voltage from being positively or negatively biased and saturated. That is, this configuration allows the hall electrode to have a range in which hall calibration can be performed. Further, even if the temperature is also affected by the hall sensor electrodes and the resolution of the camera lens varies depending on the temperature, in the present embodiment, it is possible to prevent a case where the hall voltage is biased positively or negatively, and therefore it is also possible to compensate the resolution of the lens accordingly, so that it is possible to easily prevent the resolution from being lowered.

In addition, a circuit design for compensating an offset related to the output (i.e., hall voltage) of the second hall sensor 1253b can also be easily made.

Fig. 23 is a view illustrating a driving part according to an embodiment.

Referring to fig. 23, as described above, the driving part 1250 includes the driving magnet 1251, the driving coil 1252, the hall sensor part 1253, and the substrate part 1254. The description given above of the camera actuator according to the second embodiment can be equally applied.

Fig. 24a is a perspective view of a second camera actuator according to the embodiment, fig. 24b is a sectional view taken along a line SS' in fig. 24a, and fig. 24c is an example diagram of movement of the second camera actuator shown in fig. 24 b.

Referring to fig. 24a to 24c, Y-axis tilting may be performed. That is, rotation may occur in the first direction (X-axis direction), and OIS may be implemented.

In one embodiment, the third magnet 1251c disposed at the lower portion of the prism holder 1231 may form an electromagnetic force with the third coil 1252c and may tilt or rotate the mover 1230 with respect to the second direction (Y-axis direction).

Specifically, the repulsive force between the first and

second magnets

1242 and 1243 may be transmitted to the first and

second members

1231a and 1226 and finally to the inclined guide 1241 disposed between the second member 1226 and the prism holder 1231. Accordingly, the tilt guide part 1241 may be pressed by the mover 1230 and the case 1220 due to the repulsive force.

Also, the second protrusion PR2 may be supported by the second member 1226. In this case, in one embodiment, the inclined guide part 1241 may be rotated or inclined with the second protrusion part PR2 protruding toward the second member 1226 as a reference axis (or a rotation axis), i.e., rotated or inclined with respect to the second direction (Y-axis direction). In other words, the inclined guide part 1241 may be rotated or inclined in the first direction (X-axis direction) with the second protruding part PR2 protruding toward the second member 1226 as a reference axis (or rotation axis).

For example, due to the first electromagnetic forces F1A and F1B between the third magnet 1251c disposed in the third seating groove and the third coil 1252c disposed on the third substrate side, the mover 1230 may be rotated by the first angle θ 1(X1 to X1a) in the X-axis direction and OIS may be implemented. In addition, the mover 1230 may be rotated by a first angle θ 1(X1 to X1b) in the X-axis direction due to the first electromagnetic forces F1A and F1B between the third magnet 1251c disposed in the third seating groove and the third coil 1252c disposed on the third substrate side, and OIS may be implemented. The first angle θ 1 may be in a range of ± 1 ° to ± 3 °. However, not limited thereto.

Fig. 25a is a perspective view of a second camera actuator according to the embodiment, fig. 25b is a sectional view taken along a line RR' in fig. 25a, and fig. 25c is an example diagram of movement of the second camera actuator shown in fig. 25 b.

Referring to fig. 25a to 25c, X-axis tilting may be performed. That is, the mover 1230 may be tilted or rotated in the Y-axis direction, and OIS may be implemented.

In one embodiment, the first and

second magnets

second coils

Specifically, the repulsive force between the first and

second magnets

1242 and 1243 may be transmitted to the second member 1226 and the prism holder 1231, and finally transmitted to the inclined guide 1241 disposed between the prism holder 1231 and the second member 1226. Accordingly, the inclined guide part 1241 may be pressed by the mover 1230 and the case 1220 due to the repulsive force described above.

Also, the 1 st-1 st and 1 st-2 st protruding portions PR1a and PR1b may be spaced apart from each other in the first direction (X-axis direction) and supported by the first protrusion groove PH1 formed in the fourth seating groove 1231S4a of the prism holder 1231. Further, in one embodiment, the tilt guide 1241 may be rotated or tilted with the first protrusion PR1 protruding toward the prism holder 1231 (e.g., in the third direction) as a reference axis (or rotation axis), i.e., rotated or tilted with respect to the first direction (X-axis direction).

second magnets

1251a and 1251b disposed in the first seating groove and the first and

second coils

1252a and 1252b disposed on the first and second substrate sides, the mover 1230 may be rotated by the second angle θ 2(Y1 to Y1a) in the Y-axis direction and OIS may be implemented. Further, due to the second electromagnetic forces F2A and F2B between the first and

second magnets

second coils

The second camera actuator according to the embodiment may control the mover 1230 to rotate in the first direction (X-axis direction) or the second direction (Y-axis direction) due to an electromagnetic force between the driving magnet in the prism holder and the driving coil provided in the housing. In this way, it is possible to minimize the occurrence of the offset or tilt phenomenon and provide the optimal optical characteristics in the course of implementing OIS. Further, as described above, "Y-axis tilt" refers to rotation or tilt in a first direction (X-axis direction), and "X-axis tilt" refers to rotation or tilt in a second direction (Y-axis direction).

Fig. 26 is a perspective view of an actuator for auto-focus (AF) or zoom according to another embodiment of the present invention, fig. 27 is a perspective view in which some components are omitted from the actuator according to the embodiment shown in fig. 26, fig. 28 is an exploded perspective view in which some components are omitted from the actuator according to the embodiment shown in fig. 26, fig. 29a is a perspective view of a first lens assembly in the actuator according to the embodiment shown in fig. 28, and fig. 29b is a perspective view in which some components are omitted from the first lens assembly shown in fig. 29 a.

Fig. 26 is a perspective view of an actuator for auto-focus (AF) or zoom according to another embodiment of the present invention, fig. 27 is a perspective view with some parts omitted from the actuator according to the embodiment shown in fig. 26, and fig. 28 is an exploded perspective view with some parts omitted from the actuator according to the embodiment shown in fig. 26.

Referring to fig. 26, the actuator 2100 according to the present embodiment may include a housing 2020, and a circuit board 2040, a driving part 2142, and a third lens assembly 2130 disposed at an outer side of the housing 2020.

Fig. 27 is a perspective view in which the housing 2020 and the circuit board 2040 are omitted from fig. 26. Referring to fig. 27, the actuator 2100 according to an embodiment may include a first guide 2210, a second guide 2220, a first lens assembly 2110, a second lens assembly 2120, a driving part 2141, and a driving part 2142.

The driving part 2141 and the driving part 2142 may include a coil or a magnet.

For example, in the case where the driving

portions

2141 and 2142 include coils, the driving portion 2141 may include a first coil portion 2141b and a first yoke 2141a, and the driving portion 2142 may include a second coil portion 2142b and a second yoke 2142 a.

Or, conversely, the driving part 2141 and the driving part 2142 may include a magnet.

Referring to fig. 28, an actuator 2100 according to an embodiment may include a housing 2020, a first guide 2210, a second guide 2220, a first lens assembly 2110, a second lens assembly 2120, and a third lens assembly 2130.

For example, the actuator 2100 according to an embodiment may include a housing 2020, a first guide 2210 disposed at one side of the housing 2020 and a second guide 2220 disposed at the other side of the housing 2020, a first lens assembly 2110 corresponding to the first guide 2210, a second lens assembly 2120 corresponding to the second guide 2220, a first ball 2117 (see fig. 29a) disposed between the first guide 2210 and the first lens assembly 2110, and a second ball (not shown) disposed between the second guide 2220 and the second lens assembly 2120.

Further, in this embodiment, the actuator 2100 may include a third lens assembly 2130 disposed in front of the first lens assembly 2110 in the optical axis direction.

Referring to fig. 27 and 28, in the present embodiment, the actuator 2100 may include a first guide 2210 disposed adjacent to a first sidewall of the housing 2020 and a second guide 2220 disposed adjacent to a second sidewall of the housing 2020.

The first guide 2210 may be disposed between the first lens assembly 2110 and a first sidewall of the housing 2020.

The second guide portion 2220 may be disposed between the second lens assembly 2120 and the second sidewall of the housing 2020. The first and second sidewalls of the case 2020 may be disposed to face each other.

According to this embodiment, since the lens assembly is driven in a state where the first and

second guide parts

2210 and 2220, which are precisely numerically controlled, are coupled in the housing 2020, frictional torque may be reduced and frictional resistance may be reduced. Thus, there are technical effects such as an increase in driving force during zooming, a reduction in power consumption, and an improvement in control characteristics.

Thus, according to this embodiment, there is the following combined technical effect: in the process of zooming in or out, the friction moment is minimized, and eccentricity of the lens, inclination of the lens, or the occurrence of a phenomenon in which the central axes of the lens group and the image sensor are misaligned is prevented, thereby remarkably improving resolution.

In particular, according to the present embodiment, since the first guide 2210 and the second guide 2220, which are separately formed and assembled with the housing 2020, are separately employed instead of providing the guide rails on the housing itself, there is a particular technical effect: generation of a gradient (gradient) in the injection direction can be prevented from occurring.

In the present embodiment, the first and

second guide parts

2210 and 2220 may be injected in the X-axis direction, and the length of the first and

second guide parts

2210 and 2220 injected may be shorter than the length of the housing 2020. In this case, there are the following technical effects: when the guide rails are provided in the first and second guide parts 2210, the generation of a gradient during injection can be minimized, and the possibility of distortion of the straight line of the guide rails is low.

More specifically, FIG. 29a is a perspective view of first lens assembly 2110 in an actuator in accordance with the embodiment shown in FIG. 28, and FIG. 29b is a perspective view with some components removed from first lens assembly 2110 shown in FIG. 29 a.

Referring to fig. 28, in the present embodiment, the actuator 2100 may include a first lens assembly 2110 moving along a first guide 2210 and a second lens assembly 2120 moving along a second guide 2220.

Referring again to fig. 29a, the first lens assembly 2110 may include a first barrel 2112a in which the first lens 2113 is disposed and a first drive part housing 2112b in which the drive part 2116 is disposed. The first barrel 2112a and the first driving portion housing 2112b may be first housings, and the first housings may be formed in a cylindrical shape or a barrel shape. The driving portion 2116 may be a driving magnet, but the present invention is not limited thereto, and a coil may be provided in the driving portion 2116 in some cases.

In addition, the second lens assembly 2120 may include a second barrel (not shown) in which a second lens (not shown) is disposed and a second driving part housing (not shown) in which a driving part (not shown) is disposed. The second barrel (not shown) and the second driving part housing (not shown) may be a second housing, and the second housing may be formed in a cylindrical shape or a barrel shape. The driving part may be a driving magnet, but the present invention is not limited thereto, and a coil may be provided in the driving part in some cases.

The driving portion 2116 may correspond to the two first guide rails 2212.

In one embodiment, a single ball or multiple balls may be used to drive the actuator 2100. For example, in one embodiment, the actuator 2100 may include a first ball 2117 disposed between the first guide 2210 and the first lens group 2110 and a second ball (not shown) disposed between the second guide 2220 and the second lens group 2120.

For example, in one embodiment, the first balls 2117 may include a single 1-1 st ball 2117a or a plurality of 1-1 st balls 2117a disposed at an upper side of the first drive portion housing 2112b and a single 1-2 nd ball 2117b or a plurality of 1-2 nd balls 2117b disposed at a lower side of the first drive portion housing 2112 b.

In one embodiment, the 1 st-1 st ball 2117a of the first balls 2117 may move along the 1 st-1 st rail 2212a, which is one of the first rails 2212, and the 1 st-2 nd ball 2117b of the first balls 2117 may move along the 1 st-2 nd rail 2212b, which is another one of the first rails 2212.

According to an embodiment, since the first guide comprises the 1 st-1 st guide rail and the 1 st-2 nd guide rail, the 1 st-1 st guide rail and the 1 st-2 nd guide rail can guide the first lens assembly 2110, and there are the following technical effects: during the movement of the first lens assembly 2110, the accuracy of alignment with the optical axis of the second lens group 2120 may be improved.

Referring to FIG. 29b, in one embodiment, first lens assembly 2110 may include a first assembly recess 2112b1 with first balls 2117 disposed in first assembly recess 2112b 1. Second lens assembly 2120 may include a second assembly recess (not shown) with a second ball disposed in second lens assembly 2120.

First assembly recess 2112b1 of first lens assembly 2110 may be provided as a plurality of first assembly recesses 2112b 1. Here, a distance between two first component grooves 2112b1 in the optical axis direction among the plurality of first component grooves 2112b1 may be larger than the thickness of the first barrel 2112 a.

In one embodiment, first assembly notch 2112b1 of first lens assembly 2110 may be formed in a V-shape. In addition, a second assembly groove (not shown) of the second lens assembly 2120 may be formed in a V shape. In addition to the V-shape, first assembly groove 2112b1 of first lens assembly 2110 may be formed in a U-shape or a shape contacting first ball 2117 at two or three points instead of the V-shape. The second assembly groove (not shown) of the second lens assembly 2120 may be formed to have a U shape other than a V shape or a shape to contact the second ball at two or three points.

Referring to fig. 28 and 29a, in one embodiment, the first guide portion 2210, the first ball 2117, and the first assembly groove 2112b1 may be disposed on an imaginary straight line in a direction from the first sidewall to the second sidewall. The first guide 2210, the first ball 2117, and the first assembly groove 2112b1 may be disposed between the first and second side walls.

Next, fig. 30 is a perspective view of a third lens assembly 2130 in the actuator according to the embodiment shown in fig. 28.

Referring to fig. 30, in the present embodiment, the third lens assembly 2130 may include a third housing 2021, a third barrel, and a third lens 2133.

In the present embodiment, since the third lens assembly 2130 includes the barrel part recess 2021r provided at the upper end of the third barrel, the following combined technical effects are exhibited: the thickness of the third barrel of the third lens assembly 2130 may be maintained constant and the amount of product injected may be reduced to improve the accuracy of numerical management.

Further, according to an embodiment, third lens assembly 2130 may include a housing rib 2021a and a housing recess 2021b provided in third housing 2021.

In the present embodiment, the following comprehensive technical effects are achieved: third lens assembly 2130 includes a case recess 2021b provided in third case 2021, whereby the amount of injected product can be reduced to improve accuracy of numerical management, while strength can be ensured by case ribs 2021a provided in third case 2021.

Fig. 31 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.

As shown in fig. 31, a mobile terminal 1500 according to an embodiment may include a camera module 1000, a flash module 1530, and an Auto Focus (AF) device 1510 disposed at a rear surface.

The camera module 1000 may include an image capturing function and an AF function. For example, the camera module 1000 may include an AF function using an image.

The camera module 1000 processes image frames of still images or moving images obtained by an image sensor in a photographing mode or a video call mode.

The processed image frames may be displayed on a predetermined display unit and stored in a memory. A camera (not shown) may also be provided on the front surface of the body of the mobile terminal.

For example, the camera module 1000 may include a first camera module 1000A and a second camera module 1000B, and OIS as well as AF or zoom functions may be implemented due to the first camera module 1000A.

The flash module 1530 may include a light emitting device configured to emit light disposed therein. The flash module 1530 may be operated by the operation of the camera of the mobile terminal or by the control of the user.

As the light emitting portion, the autofocus device 1510 may include one package of the surface emitting laser device.

The autofocus device 1510 may include an autofocus function using a laser. The auto-focusing device 1510 may be mainly used in a case where an auto-focusing function of an image using the camera module 1000 is deteriorated, for example, in a dark environment or when a distance from an object is about 10 m.

The auto-focusing device 1510 may include: a light emitting part including a Vertical Cavity Surface Emitting Laser (VCSEL) semiconductor device; and a light receiving portion, such as a photodiode or the like, configured to convert light energy into electric energy.

For example, fig. 32 is a diagram of the exterior of a vehicle including a vehicle driving assistance apparatus to which the camera module 1000 according to the embodiment is applied.

Referring to fig. 32, a vehicle 700 according to the embodiment may include wheels 13FL and 13FR configured to be rotated by a power source and a predetermined sensor. The sensor may be the camera sensor 2000, but is not limited thereto.

The camera sensor 2000 may be a camera sensor to which the camera module 1000 according to the embodiment is applied. The vehicle 700 according to the present embodiment may acquire image information through the camera sensor 2000 capturing a front image or a surrounding image, and the vehicle 700 according to the present embodiment may determine whether a lane is not recognized using the image information and generate a virtual lane when the lane is determined to be not recognized.

For example, the camera sensor 2000 may capture an image of the front of the vehicle 700 to acquire a front image, and a processor (not shown) may analyze an object included in the front image to obtain image information.

For example, when objects such as lanes, adjacent vehicles, driving obstacles, and central roads, curbs, or road trees, which correspond to indirect road markings, are included in the image captured by the camera sensor 2000, the processor may detect the objects and include the objects in the image information. Here, the processor may acquire information on the distance from the object detected by the camera sensor 2000 and further supplement the image information.

The image information may be information on an object contained in the image. The camera sensor 2000 may include an image sensor and an image processing module.

The camera sensor 2000 may process a still image or a moving image obtained by an image sensor, for example, a Complementary Metal Oxide Semiconductor (CMOS) or a Charge Coupled Device (CCD).

The image processing module may process a still image or a moving image obtained through the image sensor to extract necessary information and transmit the extracted information to the processor.

Here, the camera sensor 2000 may include a stereo camera to improve object measurement accuracy and further ensure information on a distance between the vehicle 700 and an object, etc., but the present invention is not limited thereto.

The present invention has been described above based on the embodiments, but the embodiments are merely examples and are not intended to limit the present invention. It will be understood by those skilled in the art that various modifications and applications may be made without departing from the scope of the basic features of the present embodiments, which are not described herein. For example, the respective elements specifically described in the embodiments may be modified and implemented. Furthermore, all differences, which relate to modifications and applications, shall be construed as falling within the scope of the present invention, which is defined by the appended claims.

Claims

1. A camera actuator, comprising:

a housing;

a mover disposed in the case;

a tilt guide disposed between the case and the mover;

a driving part provided in the case to drive the mover;

a first magnet disposed at the mover; and

a second magnet disposed to face the first magnet,

wherein the inclined guide is pressed by the mover due to a repulsive force of the first and second magnets.

2. The camera actuator of claim 1, wherein:

the mover includes a seating groove configured to receive the tilt guide; and is

The camera actuator also includes a first member and a second member configured to be received in the seating recess.

3. The camera actuator of claim 2, wherein:

the inclined guide portion is disposed between the first member and the second member; and is

The second member is disposed between the tilt guide and the mover.

4. The camera actuator of claim 3, wherein:

the seating groove includes a first groove on a bottom surface;

the second member includes a second groove provided on a surface facing the first groove;

the first magnet is arranged in the first groove; and is provided with

The second magnet is disposed in the second recess.

5. The camera actuator according to claim 4, wherein the tilt guide includes a base, a first protrusion protruding from a first surface of the base, and a second protrusion protruding from a second surface of the base.

6. The camera actuator according to claim 5, wherein the mover is tilted about a first axis with respect to the first protrusion and tilted about a second axis with respect to the second protrusion.

7. The camera actuator of claim 6, wherein:

the first member includes a first projection recess configured to receive the first projection; and is

The second member includes a second protrusion recess configured to receive the second protrusion.

8. The camera actuator of claim 7, wherein:

the first member, the second member, and the tilt guide at least partially overlap with the mover along the second axis;

the slanted guide portion overlaps the first member and the second member along a third axis; and is

The third axis is perpendicular to the first axis and the second axis.

9. The camera actuator of claim 6, wherein:

the seating groove includes: a first region in which the first member is accommodated; and a second region in which the second member is accommodated; and is

The height of the first region is greater than the height of the second region.

10. The camera actuator of claim 9, wherein:

the seating groove includes a third region in which the inclined guide is received; and is

The third region is disposed between the first region and the second region.

11. The camera actuator of claim 10, wherein a height of the third region is less than a height of the first region and greater than a height of the second region.

12. The camera actuator of claim 6, wherein:

the driving part comprises a driving magnet and a driving coil;

the driving magnet comprises a first magnet, a second magnet and a third magnet;

the driving coil comprises a first coil, a second coil and a third coil;

the first and second magnets are symmetrically disposed on the mover with respect to the first axis;

the first coil and the second coil are disposed symmetrically about the first axis between the case and the mover;

the third magnet is disposed on a bottom surface of the mover; and is

The third coil is disposed on a bottom surface of the case.

13. The camera actuator according to claim 12, wherein the inclined guide overlaps the third coil or the third magnet along a third axis.

14. The camera actuator according to claim 2, wherein the second member is disposed between the slanted guide and the first member.

15. A camera actuator, comprising:

a housing;

a mover disposed in the case;

a tilt guide disposed between the case and the mover;

a driving part provided in the case to drive the mover;

a first magnet disposed at the mover; and

a support member provided in the housing and a second magnet provided in the support member,

wherein the tilt guide is disposed between the mover and the support member, and

surfaces of the first magnet and the second magnet facing each other have the same polarity.